/ Digitized by the Internet Archive ’ -in 2016 https://archive.org/details/tradesecretscoll60robi ©rabp COLLECTION OF PKACTICAL BEC^EIPTB rOR THE USE OF pflWltrs, Stffnt Sasmis, §uilhi:s, flatljk Pasfliis, |oIisI]tn, it, TO WHICH IS ADDED A DESCRIPTION OP THE VARIOUS STONES IN THE CN H'EL) KINGDOM SUITABLE FOR MONUMENTAL PURPOSES, iic. COMPILED AND EDITED BY JOSEPH B. ROBINSON, SCULPTOR, DERBY. AUTHOR OF THE FOLLOWING WORKS — “ Designs for Monuments,” “ Gothic Ornament Adapted from Nature,” “ Cemetery and Churchyard Memorials,” "Epitaphs from the Cemeteries of the United Kingdom,” “In Memoriam,” &c., GXAT 21 YEARS. HERE REST IN HOPE OF A JOYFUL RESURRECTION, THE HE3s/I.A-ZlsrS OT* MARY, THE BELOVED WIFE OF euts, WHO DIED JANHAEY 17th, 1859, AGED 63 YEARS. METHODS OF ARRANGING AN INSCRIPTION. 15 Tiizs stoztz: LIE THE REMAINS OF Sm of HENRY AND HARRIET MOSELEY, WHO DIED APRIL 26tli, 1855, AOED 20 YEARS. IN MOURNFUL REMEMBRANCE OF JAMES CAMPBELL BELL, BORN SEPTEMBER 30th, 1848, DIED MARCH 1st, 1859. TO THE FONDLY CHERISHED MEMORY OF €lt^a garrison, WHO FELL ASLEEP IN JESUS, DECEMBER 6th, 1857, ^(3-EID 18 'Y'Zl.A.K.S. TO THE LOVED MEMORY OF SARAH MASON, ¥H0 DEPARTED THIS LIEE 1859 AGED 30 YEARS. 7 16 METHODS OF ARRANGING AN INSCRIPTION. Sacrett TO THE MEMORY OF SAMUEL PARKER, HIS SUBLUNARY DESTINY ENDED SEPTEMBEE 16th, 1842, AOED 5S YEARS- ERECTED STo Perpetuate t\)t Hetnorg of JOHN RADFORD, WHO RECEIVED THE AWFUL SUMMONS OF DEATH, AUGUST IOth, I860, AGED 14 YEARS. The above style of lettering looks best for general pur- poses, and also stands the weather better than Eoman letters, the fine strokes of which in some kinds of stone are soon obliterated. Do not abbreviate any of the words. Avoid painting the face of the stone if possible, as after a few years, if the painting is not renewed, the face of the stone will shell off so far as the oil has penetrated. For painting the letters, use ready prepared Brunswick Black, which any painter will procure, the price of which is about 4s. per quart ; with this mix a little lamp black finely ground in turpentine, as the Brunswick Black has not sufficient body in it. Paint the letters once with this composition, and afterwards with good carriage varnish, price 4s. per quart ; and when sufficiently dry, rub off with fine stone and water any paint that has adhered to the face of the gravestone. 18 SPECIMENS OF ALPHABETS ANH NUMERALS. a 1 j t i f g Ij i j Ii 1 m a fl p g r s t a & to ^ j ^ : I ? a a fi ff fl ✓ SPECIMENS OF ALPHABETS AND NUMEEALS. 19 abriFfg|ts|lm aapqrsfutifeifi!; 1234 a 6 7 8 9 0 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z /E CE 1234 - 567890 . & 20 SPECIMENS OF ALPHABETS AND NUMERALS. ABCDEFGHI JKLMMOP aR N" ordering stone for Monumental Works it is always best to give the quarryman a little more than the regular price, and ask him to send selected blocks, stating for what purpose they are to be used. I find it a good plan, to have a quantity of slabs Y sawn and kept for sometime, as they will stand the % weather better when fixed than if used fresh from the quarry. There are many stones that answer well for Tombs and Monuments, if placed upon their na- tural bed the same as they lie in the quarry, that will not answer for an upright headstone, and many of the soft stones will answer for low tombs, as they absorb the damp from the ground to their w^hole thickness, and the only evil is their tendency to vegetate or moss over. A DESCRIPTION OF VARIOUS STONES IN THE UNITED KINGDOM SUITABLE FOR MONUMEN- TAL PURPOSES. ENGLAND. Portland Stone from Isle of Portland, average price at quarry 20s. per ton. Messrs. Freeman & Co., Stone Merchants, Millbank, London. Ketton Stone — A dark cream-coloured stone, price from Is. 6d. per foot. A good durable stone. Mr. Robert Hibbins, Stone Merchant, Ketton, near Stamford. 22 A DESCEIPTION OF VARIOUS STONES Mansfield Woodhouse Magnesian Lime Stone — A yellow brown stone, difficult to get in large blocks. A good weather stone, and stands well for tombs or monu- ments. Price per foot, from Is. upwards. Mr. Kobert Lindley, Stone Merchant, Mansfield, Notts. Mansfield Red Stone — A deep red colour, price 8d. per foot. Ditto, white stone, price Is. per foot. Mr. Pobert Lindley, Mansfield ; or Mr. J. Brooke, Deb- dale, Mansfield. Bolsover — Similar to the Mansfield Woodhouse stone, the blocks run small. Price per foot, lOd. Mr. John Hoskins, Bolsover, near Chesterfield. Darley Dale — Sandstone, light brown. Will stand the weather well ; price, delivered at Darley Station. Is. 4d. per foot. Apply to Darley Dale Stone Com- pany, 44, Chorlton Street, Manchester. Hopton Wood — Light grey lime stone, much used for gravestones, monuments, &c. Price per foot, from 2s. Gd. upwards. Apply to Hopton Stone Company, Middle Peak, Wirksworth, Derbyshire. Middleton — Light grey limestone same as above. Blocks of large size may be had of good quality, suitable for monuments, landings, &c. Price from 2s. Gd. to 5s. per foot. Apply to Mr. William Killer, Middleton, near Wirksworth. Pillongh Quarry — Millstone grit, a light brown stone, simdar in appearance to Darley Dale stone, but easier to work. This stone is now much used for monu- ments, tombs, and buildings. Price per foot. Is. Apply to Mr. S. Deeley, Stone Merchant, Bowsley, near Bakewell, Derbyshire. SUITABLE FOR MONUMENTAL PURPOSES. 23 Steetley — Magnesian limestone, a light cream colour, stands the weather for monuments, Ac. Price per foot, Is. Apply to Mr. J. E-utherford, Steetley, near Worksop. Watchill — Same colour as blue York, a good durable stone. Apply to Messrs. W. Ward A Sons, Mat- lock, Derbyshire. Wmgerworth — A dark brown stone, used for ilatstones and ledgers, for tombs or monuments. Price per foot, Is. Apply to Mr. J. Eutherford, Wingerworth, near Chesterheld. Penh'idge — Sandstone, used for tombs, Ac. Apply to Mr. W. Gilbert, Penkridge. Endon or Ker ridge — Sandstone, used for monuments, tombs, gravestones, Ac. Very hard and durable. Price per foot, Is. 3d. Apply to Mr. John William- son, Endon, near Macclesfield. Callow — Light brown sandstone, used for tombs, Ac. Price 9d. per foot. Apply to Mr. Thomas Chaffer, Burnley, Lancashire. Anstone — Light brown stone, used for monumental work, can be supplied in large blocks. Price Is. per foot. Apply to Mr. George Wright, Anstone, near Kiveton, Yorkshire. Brincliffe Edge — A blue stone ; good weather stone for monuments, tombs, gravestones, Ac. Price per foot Is. Apply to Mr. Thomas Vickers, Stone Merchant, Brincliffe Edge, near Sheffield. Ileddon Sandstone — Liglit brown ochre, used for the Grey Monument at Newcastle. Price 6d. to lOd. per foot. Address Mr. William Pearson, Heddon-on-the-Wall, N ewcastle-on-Tyne. 24 A DESCRIPTION OF VARIOUS STONES Brunton Sandstone — Light grey, used for monumental work. Price from 5d. to 2s. per foot. Address Mr. Robert Robson, East Brunton, Newcastle-on-Tyne. Ancaster Oolite — Cream colour, used for tombs and build- ings, a soft stone similar to Bath. Price 9d. per foot. Apply to Mr. J. Wilson, or Mr. Thompson, Grantham, or to Messrs. Kirk & Parry, Sleaford. Hay dor Oolitic Limestone — Brownish cream, used for tombs, &c. in the neighbourhood. Price 8d. per foot. Address Messrs. Chapman & Haydor, Grantham. BoltonHs Quarry^ Aislahy. — Sandstone, warm light brown. Blocks of 100 cube feet have been obtained from this quarry. Price lOd. to Is. per foot, at the quarry. Gazeby Sandstone — Grey. Used for monuments, tombs, gravestones, &c. Price Is. 6d. per foot. Address Messrs. Vint Brothers, Idle, near Leeds. Knareshorough, Lingerfield Quarry — Sandstone, strong and fine grit, light grey. Price 5|d. per foot. Address Mr. Duffield, Knaresborough. Park Nook — Magnesian limestone, cream colour. Price 7 d. per foot. Address Mr. David Knowls, Park Kook, Doncaster. Pennant — Sandstone, blue, a first quality stone for monumental work, stands the weather well. Price Is 3d. per foot. Apply to Mr. W. S. Lawrence, Stapleton, near Bristol. Uictorw — Sandstone, light brown, used for monumental work. Price Is. per foot. Address Mr. Joseph Lister & Co., Victoria Quarry, Rodley, Yorkshire. SUITABLE FOR MONUMENTAL PURPOSES. 25 BoltoTbS Gray Moor — Sandstone of uniform whiteness. This stone can be easily worked, and does not perish by weather. Price, 9d. per foot. Mr. J. Bolton, Whitby, Yorkshire. Hollington — Sandstone, White. A good weather stone, extensively used, and can be had in large blocks. Price 8d. per foot. Address Messrs. Walker & Clarke, Hollington, near Uttoxeter, Staffordshire. Parh Quarry^ Tixall — Sandstone, light grey, used for tombs and buildings. Price, 8d. per foot. Seacomhe^ Isle of Purhech — Limestone, light brown, used for obelisks, &c. Price Is. 2jd. per foot. Bath — Oolite, Coombe Down stone, when properly selected, is an excellent w^eather stone, the best quality works easily, but the blocks cannot always be obtained free from bars and vents, which constitute the chief defects in the stone. Price, 7|d. per foot. Apply Messrs. Randell & Saunders, Cor sham, Wilts. Serpentine Marble — Used for tombs, vases, fonts, pedestals, &c. Apply to Serpentine Marble Company, Penzance, Cornwall. Alabaster — Used for interior works, can be had in large blocks. Price 4s. 6d. per foot. Apply to Mr. Thos. Foster, Hanbury, Burton-on-Trent. Marsh Quarries — Sandstone, grey, used for tombs and gravestones. Apply to Mr. Sami. Hollingsworth, IMarsh Quarries, Eckington, Derbyshire. Handsworth — Blue stone, used for tombs and gravestones, may be had in large blocks. Price, Is. per foot. Apply to Mr. F. Birtles, or Mr. William Nadin, Handsworth, near Sheffield. 26 A DESCRIPTION OF VARIOUS STONES Green Moor — Light brown, used for gravestones and ledgers. Price, per foot Is, 3d. Apply to Messrs. Brown & Booth, Wortley, near Sheffield. Huddlestone — Magnesian Limestone, whitish cream co- lour. Price, 2s. per foot. Apply at the quarries, Huddlestone, near Pontefract. North Anston — Magnesian limestone, a yellowish brown stone, used for monumental works. Price, Is. per foot. Apply to Mr. Charles Wright, North Anston, Rotherham. Park Spydng — Fine gritsone, extensively used for monu- ments, tombs and gravestones. A good weather stone. Price, Is. per foot. Apply to Messrs. George and Co., Caen Wharf, Rotherhithe, London, who will send it by rail or vessel to any part of the kingdom ; or to Mr. William Denton, Stone Merchant, Leeds. Rawdon Hill — Sandstone of warm colour, used for monu- mental works. Price, lOd. per foot. Apply to Messrs. Trickett & Perkin, Kirkstali, near Leeds . Roche Abbey — Cream coloured stone, used for gravestones, &c. Price, lOd. per foot. Apply to Mr. J. Hawke, Maltby, near Rotherham. Southowram — Millstone grit, used for ledgers and plinths. Good weather stone. Apply to Messrs. Farrar and Son, Southowram, Halifax. Warwick — Sandstone of warm colour, used for tombs, &c. Price, 8d. per foot. Apply to Messrs. Ibberson, builders, Manchester. Sandivith. — Red sandstone, used for tombs and grave- stones. Price, Gd. per foot. Apply to Mr. John Glaister, Whitehaven. SUITABLE FOB MONUMENTAL PUBPOSES. 27 Walh Mill — Flagstone, used for monuments, tombs, Price, Is. per foot. Apply to Mr. Samuel Farrar, Wliiteliaven. Binl:s — Grey limestone, used for gravestones, and chim- ney pieces. Price, Is. per foot. Apply to F. Pearson, Stone Merchant, Binks Quarry, Windermere. Brusselton — Freestone, used for gravestones, &c. Price, Is. per foot. Apply to Messrs. Clementson, Brusselton Quarry, Bishop’s Auckland. Kenton — Freestone, used for ornamental works. Price, from Is. to 2s. 6d. per foot. Apply to Mr. K. Kobson, Kenton Quarries, Newcastle-on-Tyne. WALES. Llanelhoed — Blue grey stone, used for tombs, &c. Apply at the Quarries, Llanelwedd, near Builth, Brecon. Ffestiniog — Blue slate used for gravestones, slabs, &c. Apply to Welsh Slate Company, Port Madoc, Merio- nethshire. Ileullan — Limestone, takes a high polish. Price, 8d. per foot. Apply to Mr. William Foulks, Heullan, Den- bigh. Bangor — Blue slate used for gravestones, tombs, Ac. Price 30s. to GOs. per ton. Apply to Royal Slate Company, Bangor, North W ales. Penrhyn — Blue slate, used for gravestones, tombs, Ac. Apply, Penrhyn Quarries, Bangor. 28 A DESCRIPTION OF VARIOUS STONES ISLE OF MAN. Foolvash — Black marble, used for tombs, chimney-pieces, &c. Price, 9d. per cube foot. Apply to Messrs. Quillian & Creer, Poolvash Quarries, Castletown, Isle of Man. FRANCE. Caen Stone — Oolite, cream colour, used for interior monu- mental work. Price, Is. 3d. per foot. Apply to Messrs. George & Co., Caen Wharf, Botherhithe, London. Auhigny Stone Cream colour, will stand the weather, for tombs, &c. Price Is. 6d. per foot. Apply to Messrs. George & Co., Caen Wharf, Piotherhithe, London. IRELAND. Valencia — Slate, used for flatstones, slabs, &c., price, 4d. to Is. 6d. per square foot. Parkmoor — Blue limestone, used for tombs and grave- stones, price, 4d. per foot. Glogrennan — Limestone, pale blue, used for tombs, &c., price. Is. 6d. per foot. Address H. Bochfort, Esq., Carlow. Royal Oak — Black marble, used for tombs and chimney- pieces, price. Is. 6d. to 4s. per foot. Address Mr. P. Brennan, Boyai Oak Quarry, Bagnalstown, Carlow. SUITABLE FOR MONUMENTAL PURPOSES. 29 Angliham — Black marble of superior quality, capable of receiving a high polish, can be supplied in large blocks, price, 5s. 6d. per cube foot. Address T. A. Joyce, Esq., Angliham Marble Quarry, Galway. Merlin Parh — Black marble of the very finest description, and capable of receiving the highest polish, price, 5s. 6d. per cube foot. Address H. Hodgson, Esq., Merlin Park Quarry, Galway. Glannan — Hard limestone, takes a good polish, used for tombs, (fee., price, Is. fid. per foot. Address George M‘Coy, Glannan Quarries, Glasslough, Monaghan. Glehe — Hard whitish sandstone, keeps its colour well, can be had in blocks or slabs, any reasonable size, price, from Is. to 5s. fid. per foot. Address A. Delany, Glebe Quarry, Glasslough. Armagh — Carboniferous limestone, price, 3s. per foot. Address J. Gritten, Armagh. SCOTLAND. Craignair — Granite. Price, Is. per foot. Apply to Messrs. Newall, Craignair, Dalbeattie, Kirkcud- bright. Broadwood Gill — Grey sandstone, used for mausoleum Hamilton Palace. Price Is. per foot. Apply to M. Dickson, Broadwood Gill Quarries, Carluke, Lanark. Ardeer — Blue freestone, used for monumental purposes. Price lOd. per foot. Apply to James Boyd, Ardeer, Ayrshire. 80 STONES SUITABLE FOR MONUMENTAL PURPOSES. CraiJcsland — Blue freestone, used for monuments, &c. Prices from Is. 3d. to 4s. per foot. Apply to Mr. John Murdock, Civil Engineer, Ayr. Binny — Sandstone, used in the Edinburgh Cemeteries, stands the weather well. Price from Is. 5d. per foot and upwards. Apply to Mr. David Lind, Builder, No. 3, Port Hopetoune, Edinburgh. Laivers — Limestone, used for gravestones, &c. Price 8d. per foot Apply to Mr. Donald Scott, Kenmore, by Aberfeldy, Perthshire. Brechin — Sandstone of grey colour, takes a high polish, a good weather stone. Peterhead — Red granite, for polished works in this ma- terial. Apply to Messrs. Wright & Son, St. John Street, Aberdeen ; or to Mr. W. Robertson, Union Place, Aberdeen. As an illustration of a right and wrong way of mending, we will suppose a plaster of Paris figure broken ; the WTong way to mend it is by a thick paste of plaster, which makes not a joint but a botch. The right way to mend it is, by means of some well-made carpenter’s glue, wdiich being absorbed into the porous plaster, leaves merely a film covering the two surfaces, and if well done, the figure is stronger there than elsewhere. Take a quarter of a pound of virgin wax, a pennyworth of flake white, half a teaspoonful of Venice turpentine, and a little spirit of turpentine, and melt them down together. Make isinglass and strong brandy into a paste, with pow- der of egg shells finely ground ; you may make it whatever colour you please, but cast warm water into your mould, which should be previously oiled over. Leave the figure in the mould to dry, and on taking it out, you will find it bears a strong resemblance to ivory. The person must lie on his back, and his hair be tied behind, then put a conical piece of paper, open at each end, to allow of breathing into each nostril. The face is to be lightly oiled over, and the plaster being properly mixed, it is to be poured over the face until it is about half an inch thick. In a few minutes the plaster may be removed, and will form a mould, from which a second cast may be taken, after it is thoroughly dry and been well oiled. Take two parts of stearine, two parts of Venetian soap, one part of pearl-ash, and twenty-four to thirty parts of a solution of caustic potash. The stearine and soap are cut into slices, mixed with the cold ley, and boiled for about half an hour, being constantly stirred. Whenever the mass rises, a little cold ley is added. The pearl-ash, pre- viously moistened with a little rain water, is then added, and the whole boiled for a few minutes. The mass is then stirred until cold, when it is mixed with so much cold ley, that it becomes perfectly liquid, and runs off the spoon without coagulating or contracting. Before using this composition, it should be kept for several days well METHOD OF HARDENING OBJECTS IN PLASTER. 33 covered. It may be preserved for years. Before applying it to the objects, they should be well dusted, the stains scraped away, and then coated, by means of a thick brush with the wash, as long as the plaster of Paris absorbs it, and left to dry. The coating is then dusted with leather or a soft brush. If the surface has not become shining, the operation must be repeated. Make a weak solution of isinglass, and apply at the back of the drawing, or immerse the drawing in cold skim milk, and let it remain a short time, then take it out and press between two sheets of blotting paper, by means of a heavy weight on the top. Take half a sheet of fine wove paper, and oil it w^ell with sweet oil, after it has stood a minute or two, to let it soak through, rub olf the superfluous oil with a piece of paper, and let it hang in the air to dry ; after the oil is pretty well dried in, take a lighted candle and move the paper over it, in a horizontal direction, so as to touch the flame, till it is perfectly black. When you wish to take off impressions of plants, lay your plant carefully on the oiled paper, lay a piece of clean paper over it, and rub it with your finger equally in all parts for half a minute, then take up your plant, and be careful not to disturb the order of the leaves, and place it on the paper on which you wish to have the impression ; then cover it wdth a piece of blotting paper for a short time, and you will have au impression equal to D 34 TO TAKE IMPRESSIONS OF LEAVES OR PLANTS. a fine engraving. The same piece of black paper will serve to take off a great number of impressions. The principal excellence of this method is, that the paper receives the impression of the most minute veins and hairs, so that you obtain the general character of most flowers. The impressions may afterwards be coloured. The best means of preventing the corrosion, is first to dip the articles into very dilute nitric acid, and afterwards to immerse them in linseed oil, allowing the superfluity of oil to drain off ; they are by this means very effectively preserved from rust or oxidation. At the Slieffield School of Design, Mr. Young Mitchel], the master, gave a lecture, illustrated by experiments, on the art of making elastic moulds. It has great advan- tages over the old plan. The moulds may be made at small cost, and with great rapidity. That which would occupy five or six days in the modelling, may be furnished by this process in half that number of hours. By the facility thus afforded, beautiful forms may be multiplied so cheaply, as to be brought within the reach of all. The principal material used for the elastic moulds is glue or gelatine. The best fish glue will answer as well as gela- tine, and is much cheaper. The material is dissolved like ELASTIC MOULDS. 35 glue, in a vessel placed over the fire in a pot of hot water, stirring it during the process. To each pound of gelatine it is necessary to add three quarters of a pint of water, and half an ounce of bees-wax. It is ready for use when about the thickness of syrup. The model must be oiled carefully with sweet oil, and the composition must be poured upon it while warm, but not boiling. Having set, it may be taken off the model. When the model is small, it should be placed in a shoe or case, which gives facility for shaking the mould well when the plaster is poured, so as to drive it 'well into the crevices. The plaster should be fine, and in order that it may harden and set quickly, about half an ounce of alum should be added to each pint of water used in mixing it. Before using the mould, it should be carefully oiled. Great care is required in mix- ing the plaster, and watching it when in the mould, for wdien it is allowed to remain long enough to heat, the mould is destroyed. Nothing more is necessary than to wash the mahogany with lime ’^vater, which may readily be made by dropping a small piece of lime into a basin of water. This may be of use to those who wash to preserve good specimens of fine draughts of curious medals, especially as it is easily executed, and with but trifling expense. Take isinglass, and breaking it in pieces, dissolve as much of it as is necessary over the fire in a (piantity of water 36 TO TAKE IMPRESSIONS OF MEDALS. sufficient only to cover if, taking care to keep it stirring till the whole is dissolved. This done, with a hair brush stroke some of the glue over the medals, the impressions of which you would take ; after placing them as horizon- tally as you can, and when you have covered them per- fectly all over, let them lie till the glue is hardened; and afterwards, with the point of a pin or needle, raise the edge of the glue from each medal, and the whole medal in glue will fly off as hard as horn, with all the fine sharp- ness of the medal as it was struck. This glue may be made of any tint, by mixing the colour in the water the, glue is boiled in. The impression must be dried imme- diedely, but very regularly, not in a hot sun, nor in any damp place. If isinglass is used, without any colour mixed with the water, as soon as the impression from the medals are taken, breathe gently on the concave side of them, and then lay them upon the thickest sort of leaf gold, which will adhere to them, and by shining through the isinglass will appear like a gold medal. But to imi- tate a copper medal, carmine should be mixed with the water in which the isinglass is dissolved. Although water may do very well for dissolving the isinglass in for this purpose, yet brandy or spirit of wine will give the glue a much greater strength, so as not to be subject to soften in damp air. The surface of the wood must first be planed smooth, and then rubbed with weak aquafortis, after which it is to be finished with the following varnish : — To three pints of spirit of wine is to be added four ounces and a-half of dragon’s blood, and one ounce of soda, which have been TO GIVE WOOD THE APPEARANCE OF MAHOGANY. 37 previously ground together ; after standing some time, that the dragon’s blood may be dissolved, the varnish is to be strained and laid on the wood with a soft brush. This process is to be repeated, and then the wood possesses the perfect appearance of mahogany. When the polish di- minishes in brilliancy, it may be speedily restored, by rubbing the article with linseed oil. Take half a bushel of good unslaked lime, slake it with boiling water, coveriug it during the process to keep in the steam. Strain the liquor through a fine sieve or strainer, and add to it a peck of clean salt, 23reviously dissolved in warm w^ater; three pounds of good rice, ground to a thin paste, and stirred while boiling hot; half a pound of powdered Spanish whiting, and a pound of clean glue, which has been previously dissolved by first soaking it w^ell and then hanging it over a slow fire, in a small kettle within a large one, filled with w^ater. Add five gallons of hot water to the mixture, stir it w^ell, and let it stand a few days covered from dirt. It should be put on quite hot ; for this purpose it can be kept in a kettle on a portable furnace. It is said that about one pint of this mixture will cover a square yard upon the outside of a house if properly applied. It retains its brilliancy for many years. There is nothing of the kind’ that will compare with it either for inside or outside walls. Any required tinge can be given to the preparation by the addition of colouring matter. STOIsTES Keported on to the Commissioners of Woods and Forests, for the Building op the 38 CD B PI c 3 Q >> a a I ■§ o O a ^ o 6 T 3 A g « O C 3 01 -M oT S ^ .Iz o o ^ § _o ^ "S n : ' S 2 I- o 0^-2 I s § § S i ^ o.S bX) S ^ ^ N o rpi p c 3 c 2 O’ 8 §‘ Pi cS a ^ =.-|- .2 a O ^ cF w .2 a ■2 g 8 _P Si). -H be d -p m ' r * 1 - .S ^ I N O’ 'm rd +3 CD 'P 1- O ' — I a=s 'o O M o .2 o d a ■pj 9^ c3 d o K be o - d ^ dJ O tsj ;‘,'’.2 d C 3 bo ^ Cj d cs '5 £ a d o W d a I^S-S a d d :; S'^ ig nd d d d g .2 !» O i 3 j ) .2 0 'S g rj2 m o ^ d « -p rt nn d o .d d 5 O oi p bo d & 2 O’ rd TD pd 73 m ■ 1 d 9 J > C ^ .■p ^ d O .a t =^ p ? d -p CO -d $■ 'So p £ bo p id & O .2 P •JJ o p 1^ rd • 2 P o o rd _CC d rO _2 o d -p ^ a (D 9 ^ ^ .^4 A d ?£ £ o be be rd P 1 6 Hd W PI o «J d1 d !/? be _o 'Ti ‘p 'p a” 5 -p; g S3 S § . g'g S G .y r§>:3 -P &M 4^ in C3 ^ O ,o C g S -§ S O •'"T rG « § G.1^ CO O « ^ .2 G '5 P! o o -:i a Gl Q ro M S § ^■| o'? 2^'P •'' i o G a ^ CQ ^ c^ -P P O P> be S N S - O G -3 .2 ^ be a P> g"G ^pi3 ■? § O pL, PG to 'be 2 2 p G o ■ G .3 G ’be< 2 ^ G'bi) o o 02 O . 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I o A 2 -p" o . li § s I O ■7:5 w p a d d ^ O ^ t 3 2 -2 1 O) .;:) 2 o rf M 1 ^ ® S P ,M ^ ' pH •7^ rjl _ 2 § Pi CO P ' 2 p^ ..2 p|n 2 ‘?^ jd 5 ^ 0 ^ ^ cJ o •g 8:S-e o' m' CO P ^ pj '2 ^ p 8 2 '2 o ® « p1j §- B- 3 -eg ,g¥|£ is i i lii^l-ls'; a :S :9 '$ $ ® be a d o o 2 - 1 -I - p « p ©go *= ^ § 'S P '8 p .2 p p 2 O 2 O o g g . o 2 O fco2 bo o o•I3 22-pP-^^P -j :g ^3 2 2 ;p •-I -r o o P P PO O O S ® 2 2 PP CO C ^ g 2 p .. p p pq o ^ Jh p p 2 p P P p ^ P.2 p ^p p :jr* P 1^ P G* lO* 8 S 8 PQ? G ?2 M 8 © o 2 ^ 6^ o bo bo P © .3 "Ti P O C/2 T< r© CO p o © rP © p "p I 2 )2 tT o a p p p p p 'p p o 1 p d o c d HJ 4-> o s o o k: O o P ft -p A Sa 41 12 2 ’ r=l o S ; 02 H ^ Kr C^ = §■3, I: N rt O O-P O k! Ph C ^ 2 o O '9 X rO “ ill o .2 S .2 o o !=3 2 P s ^ O pd CD M be a3 ♦ 6 d 6 6 6 M d ^4 6 d rt P - d o , 6 a rfn O ' rj P P I ,Q C '73 . O ■p ■ Sp! H P O U 'P P c3 O P -d a CD !i rd O CQ s d ft o' -4J -tJ ft 42 fl fl 0) o 2 2 ^ ^ ’2 -2 ns M .— CS C i £ i M C3 +J 53^ 2 2 8|S^ rt tn' m • 5 '-I W !» y p! O w O 2 S Ipo S4 4^ W p o c . “s g= i §:§ c a p ®:;3 S S » 'XJ W 02 02 O' a s &8 N ■+J M a .O ^.2 P.-2-I a ^ ^ o fl o o ® 3=1 ^ «-o -PM ^ T5 5 - q;> fl ce -;ij '®’.a i^.2 a--a a a . oT a ^ g-S § 8 ^•3 a ° P-g S= o o> oT -jj'^ N (3 O M 2 a “ „ i=l |-S'^.2^J^.2 =3-2 o-s o'? <=> ^ 2 2 -2 a 52 g ^h= a-§ o ^ o 6 '■-• ® r- Ql-^ Cm N I? si 2 =3 Q. o o o ^ ■ '’Isi’ll-a O P^'flS a ^ - =1 ^ d M^d^2 Ua 2 a §ii'5.2 §.2 [2 S ^ §’51)1 $ S’w;2 ^ re's O S m CO OQ ai aj M S t 3 ■73 d K tT c5 w 0) o ■+J o -+-> p 6 P o -+J -tJ p “igge, COMPONENTS. 48 c:^ bc.S g c3.1i; c3 .1=; CD c3 > ^ < 4 _| o ^ . o ^ t isM-s^ ='" M C3 ^ W S •'3 »4H ©■r'^ c3 o3 ^ © -p) C3g“csgg-r3c3 1 O O b»o| 8-g 2 ° ® 2® “ !>>g.1^ B > ^ ^r—icb 5r^ ©®g©2po© — H D2 O rO O e. g g eg S eg » |ili ^ ° be © g . ^ g g M © ©rp O g ,-p ^ g c o © bo S ^ S=5 rS ^ g ^15.2 ■g © t 3 ^6 a’&l - « g ^ g o g gg < r? .s g ^ bo, ^ "© .2 M g 1 ^ b o S-i c O ©go o Q Scotland. 44, .S o -2 o “ ® o 'm I I S'^ S o g|.i-§ Js'o-fa . E«g§".,g£»S G ~p !/) O O 'lllo.s||| - G M M “ G 2 ? 2 « Sgs 2 ■'".2 S g !=^ G O G r5 o G CD 0 CO bo 0) &H O c5 c^ O ?§S tT 1 s Cj c3 g fl -r! CD •^ _o ^ ^ ,g o ’S s ^ G G G rd M Ph o G 2 ^ Qj !/) -rH 5_ M g^Si "G M cr.M w o rG +3 o !2 o o .2 o W -N CD 'y G 2 G ° .2 o CD .2 o © 'TJ o © •JG c- © G3 rT:i • Co _Ci »r-i Co - Oi CJ 4-1 a nq3 ©''‘g J g.2 ^ g -^.a g G A . , QDM !>.bjDg fe ' G ^ —G I -p G3 « G p ’ A: ^ j -G . Gl ’ 2:5 ° ^ 4J G ■ 5 ^ Ph , QO O . CD . ^ W “ ^ P .© S .9 - ■ <4H ' G ^ Ec Ec 2 G g g ^ 2_§ 82 § G .2 G S § o S o .G '2 § G§-^ CD ;:z| G GO O G © G O l>> p 1^ G 2 GO GO 5 -J2 © -♦-3 'Ph G ft ft GO rG •2 '2 o G o .2 g G © «+H g' -|J ^ rG P s>: aj od ® "G o o GD G © . p 2 p 2 gc5 G cj © ^ cG W G p G d dT O ^ P H H !2i p o O G rO G 5 H 6 -p Q © .2 d is P d 4^ ft © .2 P3 CQ o P4 c T1i 9 following ingenious and practicable method of deter- mining how far a stone will resist the action of frost, was contrived by M. Brard, who communicated it to the Eoyal Academy of Science at Paris. The destructive operation of frost upon building materials is so well known, that little need be said in introducing the subject. When water freezes, it augments one-ninth in volume ; and when it does so in the cellules of solid bodies, it exerts a disintegrating power, which in due time destroys their cohesion altogether. All stones are more or less absorb- ent, though the humidity of some rocks is so slight, that in reference to their power of withstanding frost, they are entitled to be distinguished as the resistant, in opposi- tion to the less dense or non-resistant class. It suggested itself to M. Brard, after various experiments with water, and with chemical freezing mixtures, that the striking analogy between the crystallizing and expansive force of salts and congealed water, rendered the former available as media for ascertaining the amount of the resistant pro- perty possessed by stones and other bodies ; and accord- ingly pursuing his researches, with solutions of nitre, alum, sulphate of iron, common salt, Epsom salts, and Glaubers’ salts, he found that the last (sulphate of soda) was the most energetic and active, and the best exponent of the action of freezing water. The importance of the subject obtained for it consideration at the hands of the learned body before whom he laid his views ; and a com- mission of inquiry was appointed, whose report was fol- lowed by the publication of the following directions : — TEST, FROST-RESISTING POWER. 1. Choose from the quarry specimens of those parts, which, from certain observed differences of colour, grain, and general appearance of the stone, are of a doubtful quality. 2. Form the specimens into two inch cubes carefully, with sharp edges. 3. Mark on each specimen a number with Indian ink, or by scratching with a steel point, and make memoranda on paper corresponding therewith, so that the identity of each specimen with the spot whence it was obtained may be preserved, and notes added of such phenomena as may present themselves during the investigation. 4. In making the solution, use rain or distilled water, and continue to add the sulphate of soda until no more will dissolve ; its perfect saturation will be ascertained, by finding, after repeated stirring, a little of the salt re- main at the bottom of the vessel undissolved, an hour or two after it has been put in. 5. Heat the solution in any vessel usually put on a fire (perhaps an earthen pipkin may be most convenient), and when the solution boils, put in the specimens one by one, so that all may be completely immersed. 6. Be careful to continue the boiling for half an hour. 7. Take out the specimens one at a time, and suspend them by threads, so as not to touch over vessels contain- ing a portion of the liquid in which they were boiled, but strained first to insure the absence of any sand or dirt. 8. In the course of twenty-four hours, if the weather be not very damp or cold, the surfaces of the cubes will become covered with little white saline needles or crys- tals ; to wash off these, plunge each stone into the vessel below it, and repeat this two or three times a day. 9. If the specimen be of the resista7it kind, nothing will be abstracted by the crystals ; if of the non-resistant, the salt will chip off in little particles, vdiioh will be found in the vessel beneath ; its quality will thus be TEST, FROST-RESISTING POWER. 47 discovered as soon as the salt appears on the surface, and its sharp arrises and corners will soon disappear. By about the fifth day, the experiment may be considered at an end. When the salt has appeared on the surface, the deposit is assisted by dipping the stone five or six times a day in the solution. , 10. In order to ascertain the relative resisting powers of the specimens, it is only necessary to compare the weight of fragments detached from each, as found deposited in the respective vessels, when the greatest weight will de- note the specimen least adapted to building purposes. Date. Patentee. Analysis of Process. 1838. 1841. 1846. 1847. 1848. 1852. 1853. 1854. 1854. 1855. 1855. Bethel. Newton. Teychenne. Hutchison. Bethel. Moreau. Barrett. Baines. Assanti. Bellford. Gilbee. Treating with Coal Tar, Oil, Caoutchouc, or Resin, &c. Treating with Silicate of Soda or Potash. Treating with Coal Tar, Bituminous Matter, Tal- low, or other Fatty Substances, Linseed, or other Drying Oils, Resins, and Gums. After being dried in a chamber, the Stone or other substance is immersed in a boiling Solution of Resin admixed with Oils, Tallow, or other Gummy or Fatty Matter ; or Pitch admixed with Oils, Tallow, or other Gummy or Fatty Matter ; or Coal Tai% with or without Pitch or other Bituminous Substances ; or Glue, Gums, and other Cohesive and Hard Substances, boiled into a Solution with Oil, &c. Immersing in Hot Tar, Bitumen, or Resin, with Bituminous or Tarry Oil, Treating with Silicate of Potash, Treating with Sulphur dissolved in Vinega,r or Acetic Acid, or Shell Lac, Seed Lac, Common Turpentine, and Pyroligneous Spirits ; or Gutta Percha dissolved in Coal Tar Naptha ; or Lime- stone, Water, Alum, Beer Grounds, Gall, &c. Treating first with a Solution of Alum or Sulphate of Zinc, and then with Sulphur dissolved in Oil, Treating with Gutta Percha dissolved in Sulphuret of Carbon. Treating with Silicate of Potash or Soda. Treating with Silicate of Potash applied by means of suitable Pumps. Treating with Calcined Bees’ Wax, dissolved in Coal Tar Naptha. 1855. Page. LIST OF PATENTS FOR PRESERVING STONE. 49 Date. Patentee. Analysis of Process. 1856. Ransome. Treating" with a Solution of Silicate of Potash or Soda, and afterwards with a Solution of Chloride of Calcium, producing Silicate of Lime, in the pores of the Stone ; or Solutions of Alumina and Baryta; or any two Solutions, which, by mutual decomposition, produce by deposition an in- soluble mineral precipitate in the pores, or on the surface of the Stone, &c. 1856. Clark. Treating with Gelatine, Isinglass, Fish Glue, &c., and afterwards with a Solution of Tannin or Nutgall, Sumac, or Oak Bark, &c., or Silicate of Potash or Soda. 1856. Broom AN. Coating first with a mixture of Flour, Water, and Carbonate of Lime, then with a mixture of Sili- cate of Potash, Phosphate of Soda, Sulphuret of Baryta, Zinc-White, and Borate of Man- ganese. 1857. SZERELMEY. 1 1 Coating with a mixture of Water, Blood, Ground Bricks, powdered Copper Slag, powdered Iron Slag, Argillaceous Earth, and Gaseous Matter, produced from Milk, boiled together, and after- wards with a mixture of Gas or Coal Tar, or Linseed Oil, or Rosin, or Asphalte, with Hy- draulic Lime, Grit, and Calcined Flint, boiled together. 1857. Paul. Treating with Aluminates of Potash, Soda, or any other Aluminates, or Zincates of Potash or Soda, or Phosphates of Alumina, or Zinc in So- lution by Alkalies ; also similar preparations of i Lead or Molybdenum. E 0f From Mr. Scott’s report on the experiments made on the rapidly decaying stone in Westminster Abbey, it appears the following results have been obtained — 1. Water Glass tried in 1857 and 1858. Stone hardened, but decay only partially arrested. 2. Paul’s Aluminate of Potash tried same date, same result as No. 1. 3. Ransome’s Silicate of Lime process ; same result. 4. Szerelmy’s secret process. Stone much hardened, decay only slightly visible. Mr. Faraday thinks this method, to be the best. 5. Soap and alum process: effects appear to have ceased. 6. Rocha’s Silicate : effects remain, but efficiency not reported upon. 7. Shellac in Spirits of M^ine : admirably successful where protected from rain. Scarcely so successful where exposed to rain. 8. White Wax in Turpentine. Failure. 9. Same as No. 8, with addition of Stearine better but failing. 10. Daine’s Oil and Sulphur process. Tried since July, 1859. Almost entirely successful. The above results are most encouraging. When in a matter of such import, 30 per cent, of the methods tried are almost complete successes, every hope may be enter- tained that soon some processes may be discovered quite equal to the demands made upon them. L A quantity of plaster of Paris is soaked in a solution of alum, baked in an oven, and ground to a powder ; it is then used as wanted, by being mixed with water similar to plaster : it sets into an exceedingly hard composition, and takes a high polish. It may be mixed with various coloured minerals or ochres, to represent the various marbles, and is a valuable recipe. On the Cotswold Hills, in Gloucestershire, where lime is dear, and sand not to be had, an excellent mortar is pre- pared at a moderate price. Invention is seldom more successful than when it is prompted by necessity. The scrapings of the public roads over these hills being levi- gated limestone, more or less impregnated with the dung and urine of animals travelling on them, are found to be a most admirable basis for cement. The scrapings alone are frequently used for ordinary walls ; and the general AS MADE ON THE 52 ADMIRABLE CEMENT OR MORTAR. proportioa, for even the best buildings, is not more than one part lime to three of scrapings. This mortar, of less than ten years’ standing, has been observed to possess a stone-like tenacity, much firmer than the common stone of the country ; and consequently, much harder than the stones from which either the basis or the lime was made. Similar scrapings may be collected wherever limestone is used as a material for making or repairing roads, and the mortar readily prepared, in all such places, with very little trouble and expense. In India, the plastered walls of rooms are stamped when moist, and worked into patterns, over which is spread a varnish of powdered talc, which closely resembles the rich- ness and hue of new and unused frosted silver plate. This might be introduced in England as a very cheap and elegant drawing-room decoration. To prevent damp exuding from the walls of apartments, first dry them thoroughly, and then varnish them with the following, to be procured at any oil-shop — Mix with one pint of linseed-oil about an ounce and a half of ground litharge, and two ounces of finely-powdered resin. Apply this in successive coats, which, after the fifth time, will form a varnish on the wall so hard and compact as to exclude moisture. When damp walls proceed from deliquescence, in the case of muriate of soda, &c., in intimate combination with the sand used for the mortar, it is merely necessary to wash the wall with a strong solution of alum. This converts the deliquescent salt into an efflorescent one, and the cure is complete ; or alum may be added to the plaster in the first instance. It is scarcely possible to see the bottom of a well by looking down in the common manner, but it is perfectly practical to do so with a reflector. When the sun is shining brightly, hold a mirror so that the reflected rays of light will fall into the water. A bright spot will be seen at the bottom so light as to show the smallest object very plainly. In the same way one can examine the bottom of ponds and rivers, if the water be somewhat clear, and not agitated by wands or rapid motion. If a well or cistern be under cover, or shaded by buildings, so that the sunlight wall not fall near the opening, it is only necessary to employ two mirrors, using one to reflect the light to the opening, and another to send it down perpen- dicularly into the water. Light may be thrown fifty or a hundred yards to the precise spot desired by one mirror. 54 > TO EXAMINE A DEEP TANK OR WELL. and then reflected downwards by another. There is another and very sinople manner of peering down into the depths of the sea, which is practised by collectors of deep sea specimens for the marine vivary. They put four small planks together, about two feet long and six inches wide, and fix at the bottom a square of glass. This case is of suflicient length to enable them to see below the surface agitation of the waves, when the sea is calm, by immersing it by the side of a rock, the water below that point being perfectly transparent down to the sand or shingle. Clean the picture well with a sponge dipped in warm beer ; after it has become perfectly dry, wash it with a solution of the finest gum- dragon dissolved in pure water. Never use blue starch, which tarnishes and eats out the colouring ; nor white of eggs, which casts a thick varnish over pictures, and only mends bad ones by concealing the faults of the colouring. 48 lbs. of sulphate of copper, and 2 lbs. of bichromate of potash, are dissolved in the requisite quantity of water, and 2 lbs. of carbonate of potash (pearlash) and 1 lb. of chalk added to the clear solution. The precipitate is pressed, dried, and rubbed to a powder. This colour is TO PKEPARE A BEAUTIFUL GREEN COLOUR. 55 particularly well adapted for painting dwelling-rooms and workshops, there being no fear of any poisoning from arsenic. By varying the proportions, a numl)er of differ- ent tints of colour may be obtained. ||2r03wnt3«. A NEW PRODUCT TO SUPERSEDE THE USE OF GUNPOWDER FOR BLASTING IN QUARRIES. The loss of life from the careless use of gunpowder in mining is so great, that we are glad to learn of a new product, less liable to explosion from careless treatment, and much cheaper than gunpowder for blasting rocks, &c., and which, after having been exposed to damp or wet, does not lose its explosive power, but becomes serviceable again after being dried. This substance has been invented by a Mr. Renaud, who has named it Pyronome. As com- pared with gunpowder, it is much lighter and produces the same effect. Its cost price is considerably less than gunpowder, but it cannot be advantageously used for fire- arms. It is composed of nitrate of soda, 52.5 parts; residue of tan (after it has been used for tanning), 27.5 parts; powdered sulphur, 20.0 parts. The operations for its preparation are as follows — 1. Dissolve the nitrate of soda in a sufficient quantity of water. 2. Mix the tan in this solution in such a manner that all parts may become impregnated. 3. Mix the powdered sulphur in the same manner. 4. Take the product from the fire and dry it. When completely dry it may be placed in sacks or barrels for use. This product is much superior to gunpowder for the uses above-named, in every respect, and will, we doubt not, be received as a boon by both miners and quarrymen, and will come into general use. Arranged in cartridges, no possible accident could happen ; and, 56 PYRONOMK besides being 15 per cent, cheaper than gunpowder, it possesses the rare quality of retaining its explosive pro- perties after being subjected to damp or wet — merely requiring drying- — and its preparation is so exceedingly easy as to bring it within the means of every one to manufacture for himself. The process of hardening wood by impregnating it with sulphate of iron, is stated to have been adopted with great success in the case of the American railroads and plank roads. Wood thus treated, has been rendered so hard, that after being travelled over for a twelvemonth, it has not exhibited the smallest traces of the wheels. ^^0 j|r:esierJj)ie tp00!&te)0tlk. Boiled oil and finely-powdered charcoal ; mix to the con- sistence of a paint, and give the wood two or or three coats with this composition. It is well adapted for water-spouts, casks, &c. AS A ©f Procure a square sheet-iron case, the sides being penetrated with holes to admit a current of air ; the bottom of the case to be formed of iron bands, similar to those used in MODE OF APPLICATION OF WAX. 57 fireplaces. At each corner of the upper part of the case there should be blocks also of iron, with a chain of iron to pass over an iron ledger which is placed between two tressels near the work. When this apparatus is suspended, light a fire in the case, using, in the first instance, wood and coals to light it — then feed the fire with coals till it burns brightly. You may then place it at a proper dis- tance from the marble or stone which is to be impregnated with wax, say three inches distant from the sculptured work, and in a few minutes it will heat the stbne suffi- ciently to enable you to apply the wax, which should be done with a hog-bristle brush ; the wax being previously melted in a pipkin. Care should be taken to keep the work free from dust. Spread a little nitric or muriatic acid over the putty, and \ in a short time it will become soft, when it may be easily removed. SI In setting a stone of large dimensions without a lewis, a difficidty is often experienced to lower it without chipping the edges ; to avoid this, take some pieces of lump sugar and place it at the corners, which will bear the weight of the stone until it is in its proper place for lowering down, when by applying a little water, the sugar will melt and let the stone down gradually without injury. P 58 The Editor of the Mechanics^ Magazine gives the following recipe for producing a tracing paper, “ that leaves nothing to be desired.” Mix six parts by weight of spirits of tur- pentine, one of resin, and one of boiled nut oil, and lay on with a brush or sponge. If a little magnesia (it will be well to try both the calcined and the carbonate), is powdered over the grease spot, with a piece of clean blotting paper laid again on that, and a common laundry iron moderately passed a few times over it, the grease is often readily removed. If it does not come out at once, or if there is a very large spot, it will be well to shake off the magnesia which cakes with the heat, sprinkle a fresh quantity over it, and pursue the same plan. A Company has just been established for manufacturing a kind of marine glue, invented by Mr. W. J. Hay, of Portsmouth Dockyard, and patented by permission of the Admiralty. The composition is cheaper than marine glue. WATERPROOF GLUE. 59 In addition to the purposes to 'which marine glue is ap- plicable, the waterproof glue, from its extremely low price, may be used for covering iron, wood, and all other descrip- tions of roofing and fencing, and for posts, piles, Ac. The glue, it is added, has been tested by seven years’ trial. Its principal ingredient is Trinidad pitch or asphalte, which is mixed with vegetable tar, and oil naptha, or a suitable substitute. The best proportions for the ingredients which Mr. Hay has yet discovered, are Trinidad pitch or asphalte, 60 lbs . ; vegetable tar, 15 lbs. ; oil naptha, 2 lbs. ^ They take such a quantity of pitch and tar as they think they have occasion for, and mix up with it such a quantity of the best sort of soot as not to make it too thick for use ; with this composition they paint all parts of the iron-work, for which purpose they make use of short hard brushes, because they must press pretty strongly upon the iron, in order to give it a sufficient quantity, and they always choose to perform this operation in the spring time of the year, because the moderate heat of the season hardens the pitch so, that it is never melted by the succeeding heats of summer, but on the contrary, acquires such a gloss as to look like varnish. This has been found, by experience, to preserve iron from rust much better than any sort of paint, and is as cheap as any that can be made use of. The easiest method of removing rust from iron, is rubbing it with a rag dipped in oil of tartar. The rust will dis- appear immediately. 60 ^0r)Miisi0i)i; 0f Where they are united to their sockets by lead, it may be lessened in the following manner — The cause of the cor- rosion, as is well known, is the galvanic action which goes j on between the two metals, through the medium of the water collected at the angle of juncture by capillary at- traction ; if then the lead, instead of being flush with the stone into which the iron is fixed, were to be bevilled from the iron to the stone at an angle of about 60 degrees, all the water would drain off, and consequently the galvanic action be stopped. The following mode of preserving iron fencing is simple and efficacious. Boil 8 lbs. of hog’s fat, cut very small, in a glazed pot or pipkin with three or four spoonfuls of water ; when well melted, strain through coarse linen, then set on a slow fire with 4 ounces of camphor, broken small, allowing it to boil gently. Take it off, and while hot, mix in it as much black lead as will give colour and consistence, and lay it on the railings hot. This will not only preserve the iron in the air, but also whatever por- tion may be placed underground. 61 A French architect (M. Castala) has invented a new method of employing tiles for the roofs of houses, so as to save one-half the quantity usually emjdoyed for that pur- pose. The tiles are made of a square instead of an oblong form, and the hook that fastens them is at one of the angles, so that when fastened to the laths, they hang down diagonally^ and every tile is covered one-fifth part on two sides by the upper row. The following composition has been found to be of extra- ordinary durability, as a glazing or varnish for tiles. No sort of weather, even for a considerable length of time, has had any effect upon it. It prevents that absorption of water, by which common tiles are liable to crumble into dust, hinders the shivering of the tiles, and gives to red bricks a soft lustre, by which their appearance is much improved — Over a weak fire, heat a bottle of linseed oil, with an ounce of litharge, and a small portion of minium, till such 62 TO INCEEASE THE DUEABILITY OF TILES. time as a feather, used in stirring it, shall be burnt to the degree of being easily rubbed to powder between the fingers. Then take off the varnish, let it cool, clarify it from any impurities which may have fallen to the bottom, and heat it again. Having in the meantime melted from three to four ounces of pitch, mix this with the warm varnish. The specific gravity of the pitch hinders it from mingling thoroughly with the varnish, though it even re- main so long upon the fire as to be evaporated to consider- able thickness. It is not till the varnish be cooled nearly to the consistency of common syrup, that this effect takes place in the requisite degree. If it be too thick, let hot varnish be added to bring it to the proper consistency ; if it be too thin, add melted pitch. It is to be laid on the tiles in the same manner in which oil colours in general are put upon the substances on which they are applied. The composition must be heated from time to time when it is to be used. Boil gall-nuts in wine. Then steep a sponge into the liquor and pass it on the lines of the old writing ; by this method, the letters which were undecipherable, will appear as fresh as if newly written. Scrape some French chalk very fine ; place the greased paper on the powder, and scrape more chalk upon its sur- face. Place another piece of paper upon the whole, and then pass a hot iron over it ; when the grease will be ab- sorbed by the chalk. 63 Make a strong solution of American Potash (which re- sembles burnt brick in appearance), mix this with sawdust into a sort of paste, and spread it all over the paint, which will become softened in a few hours, and is easily removed by washing with cold water. If after the panellings, &c., are diy it becomes cracked, apply a solution of hot size with a brush, which will bind it well together and make it better for varnishing, as well as destroy the beetle which is often met with in oak, and is erroneously called the worm. Fresh lime-water is said to be a good stain for new oak, another and better stain is to wash with hot beer and rub it well, the grain will show admirably, and time will mellow it down to a beautiful tone. The appearance of old oak may be obtained by exj)osing any article of new oak to the vapours of ammonia for a certain period. Eveiy variety of tint may be obtained, according to the duration and temperature of the volatile compounds. A new carved oak arm-chair, exposed to the vapours of am- monia, will in about twelve hours have all the appearance of its being made two hundred years since ; and any other wood similarly exposed, wiU obtain the appearance of oak. The following receipt for restoring old oak to its original whiteness, has been used with success, viz. — two ounces of oxalic acid, dissolved by friction in one quart of cold water. If the oak has been varnished, it must be scraped clean before using the acid. A decoction of walnut or bicory bark, with a small quan- tity of alum in it, to give permanency to the colour, makes an excellent dye for white woods. An important contribution to the comforts of eveiy-day life is announced, a viscous vegetable fat, called Heveone, the uses of which are thus described in an article on con- temporary science — “ It possesses great powers of adhesion to any surface to wd^ich it may be applied, and as it does not oxidise nor alter in the air, it serves admirably to pre- A NEW USEFUL SUBSTANCE. 65 serve iron or steel instruments, and polished articles from rust or tarnish. It retains this property even when the coating is so thin as to be almost imperceptible, and con- sequently may be constantly kept applied to surgical and philosophical instruments, arms for warfare, hunting, &c., which will thus be always bright. The lubricating pro- perties of the Heveone are still more surprising ; applied to stopcocks, pistons, screw connections, &c., it renders them at once beautifully mobile and perfectly tight ; it never dries or becomes sticky, nor does it attacks brass or other metal-work as the generality of greases does. Being quite impervious to water, Heveone is the best thing to apply to articles made of leather, such as boots, harness, &c., as they are, after a few applications, rendered quite waterproof and extremely supple ; it also tends to preserve objects against decay. Lastly, though by no means least important in these warlike times, Heveone is the best material to use for rifles, whether as a constituent of the greased wad, or to protect the interior of the barrel from rust. It prevents fouling to a far greater extent than any other kind of grease, and renders the subsequent cleaning a matter of no difficulty.” \ This process is founded upon the property which alabaster or sulphate of lime has, of being slowly eaten out by cold water, so that its polish is destroyed. In the first place, the sculptures in relief, and all the parts intended to be preserved are covered with a varnish insoluble in water, composed of wax, dissolved in oil of turpentine mixed with white lead, or rather with a turpentine varnish, to which G 66 METHOD OF BRINGING OUT SCULPTURE. white lead and a little animal oil has been added, to pre- vent the varnish from hardening and adhering too strongly to the alabaster. This is applied with a soft paint brush, moistened with oil of turpentine, into w^hich it must be dipped every time that varnish is taken. The reserved parts being thus covered, suffer the vessel or ornament to dry for some hours, and then place it in a vessel filled with cold water, and leave it there for forty-eight hours, or longer if it is thought necessary. The varnish is then removed with a fine sponge steeped in oil of turpentine, and the vessel dried with a soft and very dry rag. When the vessel is thus cleared of its varnish and dried, pass over it a new soft brush, first dipped in finely-powdered plaster. The powder fills the pores of the plaster which has been attacked by the water, and renders it mat ; which bring out the transparent parts of the alabaster in relief To take out grease spots, dissolve some Fullers’ earth in a little hot water, to the consistency of thick paste, and let it get quite cold. Cover the grease spots with it thickly ; and after it has remained all night; or for several hours, until thoroughly dry, scour it off with cold water. Should the grease not disappear with the first application, the operation must be repeated two or three times, or as often as may be necessary for its removal. To take ink out, apply strong muriatic acid, or spirits of salts to the stains with a piece of cloth ; afterwards well wash the parts with water. 07 t® llieffilrjer ii: raMspaiTiEttit:. Grind to a fine powder three pounds of clear white resin, and put it into two pounds of good nut-oil, to which a strong drying quality has been given ; set the mixture over a moderate fire, and keej3 stirring it till all the resin is dissolved ; then put in two pounds of the best Venice turpentine, and keep stirring the whole well together ; and if the cloth be thoroughly varnished on both sides with this mixture, it will be transparent. In this opera- tion the surface on which the varnish is to be apj^lied must be stretched tight, and made fast during the appli- cation. This mode of rendering cloth, &c., transparent, is excellently adapted for window blinds. The varnish will likewise admit of any design, in oil colours, being executed upon it as a transparency. With a solution in water of palm-oil soap, mix a solution of sulphate of iron, and sulphate of copper ; this furnishes a brownish green precipitate, the colour of wdiich may be modified at pleasure by the addition of a greater or less quantity of one or the other of these salts. The precipi- tate, after being washed and dried, is re-dissolved in a mixture of good varnish of linseed-oil and wax ; and with this solution the figures (having been previously heated) are coated ; on becoming dry they will be found to be perfectly bronzed. In preparing casts and moulds with gelatine, wax, fusible metal, and similar substances, it is important to use them at the lowest temperature compatible with fluidity, as when only a few degrees hotter, the water which adheres to the objects from which the casts are taken, is converted into vapour and produces bubbles. Fusible metal may be allowed to cool in a teacup until just ready to set at the edges, and then poured into the moulds. When taking impressions from gems, seals, &c., the fused alloy should be placed on paper or pasteboard, and stirred about till it becomes of the consistence of cream, from incipient cool- ing, at which moment the die or seal should be suddenly stamped upon it, and a perfect impression will be then obtained. Put upon a plate some of the best whiting ; have ready some clean warm water and a piece of flannel, which dip into the water and squeeze nearly dry ; then take as much whiting as will adhere to it, apply it to the paint, when a little rubbing will instantly remove any dirt or grease ; wash well off with water, and rub dry with a soft cloth. Paint thus cleaned looks equal to new^, and without doing the least injury to the most delicate colour ; it will pre- serve the paint much longer than if cleaned with soap, and it does not require more than half the time usually occupied in cleaning. 69 Hint feiT I A transparent cement for glass is made by dissolving one part of india-rubber in chloroform, and adding sixteen parts, by measure, of gum mastic in powder. Digest for two days, and frequently shake the vessel in which these substances are contained. The cement is applied with a fine camel’s hair brush. To make black japan, take ground burnt half-a-pound, and asphaltum four ounces ; dissolve them in boiling linseed- oil, so that it will be about the thickness of treacle when finished. It is now cooled and thinned with turpentine, so that it may be put on with a brush. If two ounces of the sulphate of zinc are added cautiously, it will dry more rapidly. By saturating writing paper in a concentrated solution of neutral chloride of zinc, then washing and drying it, the sheets contract in size, become thicker, and resemble parchment. The solution may be used either cold or hot, but in all cases the paper must be washed in water before it is dried. 70 xm To make a good black varnish for iron work, take eight pounds of asphaltum and fuse it in an iron kettle, then add two gallons of boiled linseed-oil, one pound of litharge, half-a-pound of sulphate of zinc (add these slowly or it-« will fume over), and boil them for about three hours. Then add one pound and a half of dark gum copal, and boil for two hours longer, or until the mass will become quite thick when cool. After which it should be thinned with turpentine to the proper consistency. Boil together half-a-pint each of size and stone blue water, with two tablespoonsful of whiting, and two cakes of pipe- maker’s clajq in about two quarts of water. Wash the stones over with a flannel slightly wetted in this mixture ; and when dry, rub them with flannel and brush. Some recommend beer, but water is much better for the purpose. Take a bullock’s gall, a gill of soap lees, half a gill of tur- pentine, and make it into a paste with pipeclay ; then apply it to the marble, and let it dry a day or two ; then rub it off, and if not clean, apply it a second or third time until it is clean. f feaM ft 't 03 w taira 0r 71 Take two parts of common soda, one part of pumice-stone, and one part of finely -powdered chalk ; sift it through a fine sieve, and mix it with water ; then rub it well all over the marble, and the stains will be removed,; then wash the marble over with soap and water, and it will be as clean as it was at first. ^leawigHi!: far Melt equal parts of yellow resin and bee’s-wax ; then stir in half as much finely powdered plaster of Paris. Apply hot, previously warming the pieces. llaM&a” fram: Mix equal quantities of spirit of vitriol and lemon juice, shake it well ; wet the spots with the mixture, and in a few minutes rub with soft linen until they are completely effaced. Take American potash and make a thin paste, lay on with a brush and let it remain for a few hours, then re- move with clean water. 72 . V- Dissolve five or six bits of gum mastic, each the size of a , large pea, in as much spirits of wine as will suffice to ■ render it liquid ; and in another vessel, dissolve as much isinglass, previously softened with water, in as much French brandy or rum as will make a two-ounce phial of ? strong glue, adding two small bits of pounded gum al- ; banum or ammoniacum. Mix the whole and heat. Keep ■ the glue in a phial closely stopped, and when it is to be used, set the phial in boiling water. Throughout the East this is used for uniting glass, china, and even polished , steel; and so strong is the joint, that the parts cemented ^ never separate. Put a quart or two of unslaked lime into a bucket, and before lowering it into the well, put a sufficient quantity of water on the lime to slack it ; then let it down to the water, but not so as to get into it. In a few minutes the well will be cleared of foul air, the slacking lime either absorbing the noxious air or forcing it out of the well. Smoky chimneys result from a variety of causes. The wind may be let on too freely above, or the smoke stifled below ; the vent may also be too contracted, particularly TO CURE SMOKY CHIMNEYS. 73 where several open into the same funnel. The situation of a house may also affect the chimneys, especially if backed by higher ground or loftier buildings. In many cases, the remedy for smoky chimneys is of the most simple kind, but the first step is to ascertain the cause of the defect. The following are some amongst many others — A single chimney is more liable to smoke than when it forms part of a stack. Straight flues seldom draw well. A northern aspect often produces a smoky chimney. Large fireplaces are apt to smoke, particularly when the aperture of the flue does not correspond in size ; for this a temporary remedy may be found in opening a door or a window ; a permanent cure, by diminishing the size of the lower aperture. When a smoky chimney is so incor- rigible as to require a constant admission of fresh air into the room, the best mode is to introduce a pipe, one of the apertures of which communicates with the open air, and the other terminates underneath the grate j or openings may be made near the top of the apartment, if lofty, with- out any inconvenience even to persons sitting close by the fire. Where a chimney only smokes when a fire is first lighted, the defect may be guarded against, by allowing the fire to kindle gradually ; or more promptly by laying any inflammable substance, such as shavings, on the top of the grate, the rapid combustion of which will wnrm the air in the chimney, and give it a tendency upwards before any smoke is produced from the fire itself. Sometimes the fault lies in the grate not being set trzie to the mouth of the chim- ney j this sliould be ascertained, and the grate set more backward or forward, as the case may be. If a kitchen chimney overpowers that of the parlour, as is often the case in small houses, apply to each chimney a free admis- sion of air until the evil ceases. When a chimney is filled with smoke, not of its own formation, but from the funnel next to it, cover each funnel with a, conical top, or earthen crook ; by means of which the two openings are separated a few inches, and the cold air or the gusts of wind cease to force the smoke down with them. If these remedies fail, it will be generally found that the chimney only n 74 TO CURE SMOKY CHIMNEYS. smokes when the wind is in a particular quarter ; the fol- lowing is then the best remedy to adopt — put on the top of the chimney a box, in each of the sides of which is a door hanging on hinges, and kept open by a thin iron rod running from one end to the other, and fastened by a ring j in each end to a staple. When there is no wind these doors are at rest, and each forms an angle of forty-five j degrees, which is decreased on the windward side in pro- portion to the force of the wind, and increased in the same ratio on the leeward side. If the wind be very strong, the door opposed to it becomes closed, whereby the | opposite one is opened to its utmost width. If the wind shakes the corner of the box, its shuts two doors, and forces open those opposite. This scheme is infallible ; the expense is trifling and the apparatus simple. To half-a-pint of milk put an equal quantity of vinegar, in order to curdle it ; take the curd from the whey and mix it with the whites of four or five eggs ; beat them well together ; add a little quick lime through a sieve, till it has acquired the thickness of paste. With this cement, broken vessels of all kinds may be mended ; it dries quickly and resists the action of water, as well as a considerable degree of heat. A French workman, who observed the effect on iron pipes ^ in various soils, has discovered that iron gas pipes, and water pipes, may be kept from rusting by laying them in a bed of clay. The Paris municipal authorities consider this of so much importance, that they have given him a handsome income for life as a reward. 75 Mr. Le Blanc, M^elbeck Street, has provisionally specified an invention, which is intended to facilitate the cutting of stones in open quarries. The Mining Journal says — “ The machine moves on iron rails, and cuts the stone by means of twelve pickaxes, about thirty inches in length ; they are bolted to a cast-iron plate of sixty inches in diameter : these plates are five in number. The boiler is tubular, and is furnished with cylinders, the connecting- rods of which act on the same shaft with a double crank. Two pulleys on this shaft communicate the movement to two other pulleys, the shaft of which is held by two sup- ports, on windlasses placed in front of the machine. The same shaft carries two pulleys, communicating movement to two others fixed on the shaft, and bearing the five plates, each armed with twelve pickaxes as above shown. The machine when placed on the rails, runs from one extremity of the quarry to the other, cutting the stone in a straight line ; on arriving at the end it is made to go back, the rails being placed obliquely, so that on arriving at the side it began at, it is in a position to commence a second cutting.” 76 FOR INSIDE WORK ONLY, WHICH WILL DRY AND CEASE TO SMELL WITHIN SIX HOURS. Add to a gallon of spirit of turpentine, two pounds of frankincense. Let it simmer over a clear fire till dis- solved, then strain it and bottle for use. To a gallon of bleached linseed oil add a quart of this mixture, shake them well together, and bottle this also. Let any quan- tity of white lead be ground very fine with spirit of turpentine, then add to it a sufficient portion of the last mixture, till it be found fit for laying on. If in working, it should get thick, it must be thinned with spirits of turpentine. This is what painters call a flat or dead white, to distinguish it from common white paint, being only suitable for the very best internal work, both on account of its superior delicacy and expense. AS DURABLE AS THAT PREPARED WITH OIL, AND FREE FROM ANY BAD SMELL. Take fresh curds, and bruise the lumps on a grinding- stone, or in an earthen pan or mortar, with a spat Lila. After this operation, put them into a pot with an equal A CHEAP SUBSTITUTE FOB OIL PAINT. quantity of lime, well quenched and become thick enough to be kneaded ; stir this mixture well, without adding- water, and you will soon obtain a white-coloured fluid, which may be applied with as much facility as varnish, and which dries very speedily. But it must be used the same day as made, as it will be too thick the day following. Ochre, Armenian bole, and all colours which hold with lime, may be mixed with it, according to the colour which you wish to give the wood ; but care must be taken that the addition of colour to the first mixture of curds and lime may contain very little w’ater, else the painting wfill be less durable. When two coats of this paint have been laid on, it may be polished wdth a piece of w^oollen cloth, or other proper substance, and it wdll become as bright as varnish. It is certain that no kind of painting can be so cheap, but it possesses, besides, other advantages ; in the same day twm coats may be laid on and polished, as it dries speedily and has no smell. If it be required to give it more durability in places exposed to moisture, do over the painting, after it has been polished, with the w’hite of an egg. This process will render it as durable as the best oil painting. Imbue the cloth on the wTong side wfith a solution of isinglass, alum, and soap, by means of a brush. When dry, brush on the wrong side against the grain, and then go over with a brush dipped in water. This makes the cloth impervious (for a long time) to w^ater, but not to air. 78 Mr. J. C. Martin, of Barnes, has patented a plastic ma- terial, resembling wood in its finished state. It may readily be moulded by pressure into moulds of any form ; it admits of carving or cutting to any extent required; may with facility be glass papered, and wall receive the highest French polish. The material is in great part composed of fibrous pulp, of as long a description as possible (to which it owes its strength), which is worked together with resinous and gelatinous gums, acted upon chemically, and as nearly as possible to imitate the nature of wood. Mr. Calvin Adams, of Pittsburg, has recently discovered that an important electrical change takes place when molten iron solidifies in cooling. By insulating the moulds, and the workman who pours in the liquid metal, the cast- ings from common iron come out as white as silver, and as hard as steel. This is another evidence of the universality of this subtile force, and though it is not yet applied to any practical purpose, such phenomena cannot fail eventually to produce useful effects. At the recent Meeting at Dorchester, of the Bath and West of England Agricultural Society, Lord Portman DURABILITY OF ELM PLANK. 79 stated, that the elm planks which were taken up out of the Thames previous to the building of the new^ London Bridge, were quite sound, although they had been in the water SCO years. Make a strong brine of salt and water, heat it boiling hot, then take a broom and scrub the wall with it. When dry, put the paper on as you would on a new wall, and it will stick quite as well. Or wash the walls with strong vinegar previous to putting on the paper, and your paper will be sure to stick. Take any two rods of unequal length, place the short rod at any convenient distance from the building, and the long rod at such a distance from it, that looking over the short rod to the top of the building, the top of the long rod shall cut that sight. Then say as the distance between the rods is to the height of the long rod over the short one, so is the distance of the long rod from the building to the height of the building, to which result add the short rod, and you have the height of the building. 80 Fasten the paper to a board with button drawing pius, then wash it with water, in which is dissolved an ounce of carbonate of ammonia to every pint of water. This do with care, employing a camel’s hair brush for the purpose. Then rinse the paper well with plenty of fresh water. When dry, repeat the same process for the reverse side of the paper. Now wet the paper with water made sour with white vinegar. Finally, wet the paper with water, containing a’ little bleaching powder, and again rinse with clean water; then dry it by exposure to air and sunshine. It will become white, excepting where printed. To stiffen the print give it a coat of parchment size. Most valuable prints have been thus “restored.” When the eye is irritated by dust, or intrusive particles of any kind, the sufferer invariably shuts and rubs his eye, and not unfrequently the removal of the irritating cause thereby becomes more difficult. The proper practice is to keep the eye open, as if staring ; a sort of rotatory movement of the ball takes place, the surface becomes covered with water, the particle is gradually impelled to TO REMOVE SAND OR DUST FROM THE EYE. 81 the comer of the eye, and is there floated out, or can be easily removed without any of the disagreeable conse- quences that attend shutting and rubbing. Permanganate of potash, dissolved in water, is capable of staining light wood of a brown tint, or rather of a series of brown tints, from very light to very dark, ac- cording to the quantity absorbed. The failures attendant upon employing iron cramps in masonry are too well known to require any lengthened remarks. Sir Christopher Wren forbade the use of them when exposed to the air, but permitted them, if within nine inches of air. Copper or brass are the best materials for cramps, but even iron may be used if painted, or made warm and then rubbed wdth bee’s- wax. mmtMu \umf, Place a weighed quantity of fresh lime in an open vessel in the room, and leave it there for twenty-four hours, carefully closing the doors and windows. At the end of the twenty-four houi's, re-weigh the lime, and if the in- crease exceeds 1 per cent, of the original weight, it is not safe to live in the room. I 82 Professor Edmund Davy lately read a paper to the Royal Dublin Society, on a Cement which he obtains by melting together in an iron vessel two parts by weight of common pitch, with one part of giitta percha. It forms a homo- geneous fluid, which is much more manageable for many useful purposes than gutta percha alone, and which, after being poured into cold water, may be easily wiped dry and kept for use. The cement adheres with great tenacity to wood, stone, glass, porcelain, ivory, leather, parch- ment, &c. M lleBuarfesMie In the year 1856, Mr. March, am able chemist connected ^ with the Royal Arsenal, discovered that it wns an in- variable rule wnth iron which has remained a considerable time under water, when reduced to small grains or an impalpable powder, to become red hot, and ignite any substances wnth w^hich it may come in contact. This he found by scraping corroded metal from a gun, which ignited the paper containing it, and burnt a hole in his pocket. Take an ordinary paint brush, or sponge, and run over the glass once or twice a day a little alcohol, and it will keep the glass as free from ice as in the middle of summer, and it will also give as good a polish as can be got in any other way. Take some leaf gold and white honey, and grind them together upon a marble slab until the gold is reduced to an impalpable powder. The paste thus formed is agitated in a large glass tumbler with soft water, Vvdhch dissolves the honey, while the gold falls down to the bottom. The wa,ter is then poured off and the gold washed until all the honey is removed, after which the gold is dried, and then suspended in a mucilage of gum arabic. It may then be used for waiting upon paper, and when it becomes dry, it can be burnished and rendered brilliant. Silver ink is prepared in the same manner, by substituting silver leaf for the gold. Mllar tilalk anit Most cellars are built wdthout adequate provision being made for keeping moisture from passing through the w'alls from the outside, and up through the earthen floors inside, during rainy w^eather. The cellar of a house should be dry, so as to render it comfortable and healthy, as moisture in the lower part of a dwelling generally makes the upper stories damp and chilly, and causes mildew in clothes, books, and all household articles made of cloth and leather. Cellars can be easily built so as to liave dry walls, and hard dry floors ; and the latter are in- valuable, to prevent rats from l)urrowing, as well as damp- ness from coming up from the soil beneath. To render tlie cellar walls dry, they should be coated on the outside 84 CELLAR WALLS AND FLOORS. with hydraulic cement, mixed with sand. Many houses have their cellar walls thus treated, but their floors are neglected. To make a cement floor, the surface should first be rammed down and levelled ; then hydraulic cement, mixed with sand, of about the consistency of thick mortar, should be laid on to about one inch in thickness, and its surface levelled with a scraper made of a thick plank. In laying down such a floor, sections of about eight feet square should be marked off*, and finished one after another. A coat of clean sand or gravel, owe inch thick, should be laid on the top of the cement, and after it has stood about half-an-hour, the whole should be rammed down smooth with a pounder, when the work is complete, after the surplus sand has been swept off. In a few days, such a floor becomes as hard as a stone, and quite impervious to water. The cause of the dry rot in wood is moisture ; and to prevent well-dried timber from decaying above, or under ground, is by charring it well. f0r 0if tn so AS TO MAKE IT INDESTRUCTIBLE BY WATER. Melt twelve ounces of resin in an iron pot ; add three gallons of train oil, and three or four rolls of brimstone, and when the brimstone and resin are melted and become thin, add as much Spanish brown, or red and yellow ochre. CURE FOR THE DRY ROT IN TIMBER. 85 or any other colour required, first ground fine with the same oil, as will give the whole a shade of the depth preferred ; then lay it on with a brush, as hot and thin as possible ; some time after the first coat is dried, give it a second. This preparation will preserve planks for ages, and keep the weather from driving through brick- work. It is well known, that carbonic acid often accumulates in large quantities at the bottom of wells, and that its presence may be ascertained by letting down a lighted candle, which will go out as soon as the flame comes in contact with the gas. Many men have lost their lives from descending into wells in this state. M. Sylvestre has discovered an easy way of absorbing this fatal gas. He pours lime water (water in which lime has been slaked) gradually into the well, allowing it to trickle down the sides, and then throws down some five or six pounds of quicklime, in lumps. By the next day the carbonic acid gas is all absorbed, and the well is safe. A new machine has been invented by Dr. Payerne, for the excavators under water at the port of Fecamp, which he calls the “ hydrostat.” It consists of a wrought-iron case, divided into three parts by two horizontal divisions. The lower story, or if we may so call it, the working chamber, rests on the bottom of the sea. The double sides, enclosed at bottom, contain the necessary ballast for the sinking and stability of the structure. Thirty-five men can work at ease in the working chamber. 8G Take common clay, well dried and powdered, and mix with oil in the same way that putty is made from white lead. This appears after a trial of several years to stand the weather better than white lead, showing no disposition to crumble or decay, but preserving a hardness like earthenware. In Russia, very little turpentine or varnish is used in their paints. They use the curd of milk, mixed with pigments ; it is more durable, and less dangerous on account of fires. A very excellent fire-proof wash for outside buildings, is made of clay, stirred up in water, containing about an ounce of potash for every five gallons. Take half-an-oiince of nitrate of potash, one ounce of salts of lemon, and mix well with four ounces of whiting. Spread it on the stain and leave for half-an-hour, then take it off and wash well ; afterwards touch the stain with a little fluoric acid, and wash it off directly, when the stain will be removed. 87 This mineral in its perfect form, consists, as our readers are aware, of three constituents — mica, feldspar, and quartz. The mica being that shining substance which may be detached by a sharp instrument in their flakes ; the quartz is the hard white body, which the masons call ^ horsetooth, when in large irregular pieces ; and the feld- spar is the cementing medium, in wdiich the others are embedded. Sir Gardner Wilkinson has noted the liability of the feldspar to decay under the action of nitre, so that in Egypt, where a block of granite has by displacement or accumulation of soil, been brought into contact with the earth, the granite has suffered from nitrous agency, while, where exposed to the air only, it has remained perfect. The fact, he thinks, was well known to the ancients, who usually placed granite on a foundation of sandstone. The following cement has been used with great success in covering terraces, lining basins, soldering stones, (he., and everywhere resists the filtration of water. It is so hard that it scratches iron. It is formed of ninety-three parts of well-burned brick, and seven parts of litharge, made plastic with linseed oil. The brick and litharge are pul- verized ; the latter must always be reduced to a very fine powder : they are mixed together, and enough of linseed 88 HARD CEMENT. oil added. It is then applied in the manner of plaster, the body that is to be covered being always previously wet with a sponge. This precaution is indispensable, otherwise the oil would filter through the body, and pre- vent the mastic from acquiring the desired degree of hardness. When it is extended over a large surface, it sometimes happens to have flaws in it, which must be filled up with a fresh quantity of the cement. In three or four days it becomes firm. ||jErj!jnra0. Rooms where the plastering was never well dried, either from the w^ant of time, or from being filled with frost before it had chance to dry ; rooms in basements or on the north side of a house shaded by trees, or other build- ings, are very unwholesome for sleeping apartments. And what makes the exposure greater, and the results more serious, a cold is taken when the body is in an active state, and it is very difficult, if not impossible, to throw off such colds. Quite a number of cases of severe sickness have occurred in the experience of the writer, from such exposures, and in two or three instances death has followed. No one thing is so conducive to health, as large, airy, and w’ell-lighted rooms for sleeping. This is very important where there are small children or feeble constitutions. Make two or more openings in the external walls (says the Builder), and put gratings on them to keep out vermin, from below the basement floor. Insert a tile pipe into TO PKEVENT ROT IN DWELLING HOUSES. 89 the fire wall, with one end oj^en to the space below the floor, and carry the pipe up the centre of the fire wall as close as possible to the fire flue, and out at the chimney head. The air in the pipe will be rarified, being in close contact with the fire flue, thus causing a continuous up- ward flow, sw^eeping the space below the floor of all the foul air, which, in my opinion, is the chief cause of dry rot. The whole of the apartments in the house may be ventilated by means of this pipe, by inserting a tube into it at the level of the ceiling, with a valve in it to prevent down-draught. I have adopted this system for the last ten years, because I know of no better. If the room has not been papered before, but coloured, all the old colour should be well washed and scraped off. If the room has been papered before, you need only tear off* wherever the old paper is loose or blistered. Care should be taken to remove the old loose paper, or the fresh paper will look very bad. The walls should then be well sized (the size made with an ounce of glue to a gallon of water), especially carefully size the walls close to the ceiling, as the whitewashing of the ceiling splashed on the walls kills the paste, unless it be well scraped and sized just there all round. When the walls are dry they are ready to be papered. The rolls require cutting at one edge before hanging. Take hold of the end of a roll, letting the roll fall off your knees on to the floor, and with your longest scissors cut off the edge close to the pattern all throughout the rolls you require. The paste should be thick for good papers and thinner for common thin papers. (It is better to put a nut-size lump of alum in it and use just made). If the paper is thick, it should lie a minute or two after it is pasted, but if tliin, tlie sooner it is on the wall the j 90 FOR PUTTING UP PAPER-HANGINGS. better. Begin by placing the close-cut edge of the paper at one side of the window, stick it securely to meet the ceiling, let it hang straight, and then press it down lightly and regularly with a clean cloth. The close-cut edge of the next length will cover the half-inch left on the first one, and so make a neat join ; and in this way you may go all round the room and finish at the other side of the window. If you intend to use bordering, which is very cheap and much used, and sets olf a room very much, you need not be so particular in cutting the top of paper next to the ceiling quite straight, as the border will hide that portion. Paperhangers will do well to remember, that the cheap satin papers require quick drying. A good fire in the room, and window little opened, will retain the glaze on the paper when dry. Persons should avoid sleeping in rooms papered during the day. Green papers have generally done the injury complained of them while wet and proper ventilation omitted. The first thing to be done is to wash off the dirt and stains with a brush and clean water, being careful to move the brush in one direction, up and down, and not all sorts of ways, or the work will look smeary afterwards. When dry, the ceiling is ready for whitewash, which is to be made by mixing whiting and water together till quite smooth, as thick as cream. Dissolve half-an-ounce of glue in a tea-cupful of water, and stir it into the whitewash. This as it is called, prevents the white or colour rubbing off the wall, and a tea-cupful is enough for a gallon of wash. Stone colour is made by mixing a little yellow ochre and blue black with the size, and then stirring it into the whitewash ; yellow or red ochre are also good colours, and with vermillion or indigo, any shade may be prepared, according to taste. 91 1.0 rBi The storm glass is a very elegant and economical little weatherwise,” whicli deserves more attention than it has yet received. To prepare this instrument, take two drachms of camphor, half drachm of pure nitrate of potash (nitre or saltpetre), and half drachm of muriate of am- monia (sal-ammonia), and triturate them together until they are thoroughly pulverized. The operation may be assisted by adding a few drops of alcohol. When well triturated, the mixture is to be dissolved in about two ounces of alcohol, and put into a tall phial, as an Eau de Cologne bottle, or into a glass tube, of about ten inches in height and three-fourths of an inch in diameter, the mouth of which is to be covered with a bit of bladder or the like, perforated with a pin. The instrument is then complete. The indications which it gives are of this nature — If the atmosphere be dry and the weather promising to be fine, all the solid part of the composition which appears in the glass will be closely collected at the bottom, and the liquid above will be quite clear ; but on the approach of a change to rain, the solid matter will appear gradually to rise, and small crystalline stars will be observed to float about in the liquid, which, however, will remain otherwise pellucid. On the approach of winds, flocks of the composition, apparently in the form of a leaf, will appear on the surface of the liquid, which in this case will seem thick and in a state of fermentation. These indications often begin to exhibit themselves twenty-four hours before the actual breaking forth of the storm, and after a short experience in observing the changes of ap- pearances of the materials in the glass, not only the mag- nitude of the coming storm will readily be estimated, but 92 STOKM GLASS. likewise its direction ; for the quarter of the compass from which the wind blows will always be indicated by the cir- cumstance of the solid particles lying more closely to the side of the glass opposite to that whence the tempest comes. During the winter, the composition is rendered white, by the multitude of small white stars which are constantly floating about in the liquid : this is particularly remarkable during white frost and snow. In summer, on the contrary, when the weather is warm and serene, the liquid is clear, and the solid matter lies at the bottom of the glass. If pure lime be slacked with water, and then mixed with a proper proportion of silex, the whole will crystalize, as it gradually imbibes carbonic acid gas from the atmos- phere, and thus in a series of years become as hard as unburnt limestone. (This proves that the “ carbonic acid gas” of London, is not the cause of the decay of the Houses of Parliament; it is owing to the sulphurous acid of coal gas, or the bad mortar). Very large caissons of open framework, or porous material, expeditiously filled with pure lime slacked with water, and mixed with a proper proportion of silex, and rammed down in these caissons, if exposed to the vapours of this elastic air, in an artificial form, is capable of making a very hard and durable stone, suitable for many purposes. I leave others to improve on my process for their own benefit. — J. N. Printed by Bemrose & Sons, Trongate, Derby. A LIST OF WORKS PUBLISHED BY JOSEPH B. EOBIHSON, SCULPTOE, DEEWENT ST., DEEBY. Piihlished in 1853. DEDICATED BY PERMISSION TO THE RIGHT REV. LORD BISHOP OF LICHFIELD. Price One Guinea, Handsomely Bound, SIEI^IES Oir- IDESIC3-3SrS MONUMENTS, TOMBS, GRAVESTONES, Ac. This Work contains Fifty Designs in the Gothic and Grecian Styles, From the Plainest Gravestone to the most Elaborate Monument. Published in 1855. DEDICATED BY PERMISSION TO THE RIGHT HONOURABLE LORD PALMERSTON. Complete in One Volume, Price Sixteen Shillings, CEMETERY A CHURCHYARD MEMORIALS. Containing Forty Designs for Tombs, Monuments, &c., of a Plain and Chaste Character, suitable for either Cemetery or Churchyard. Published in 1857. DEDICATED TO HIS GRACE THE IjJATE 3DTJK:E OE ID.'EYT'OHSHIHE. Price One Guinea, Handsomely Bound, GOTHIC ORNAMENT, ADAPTED FROM NATURAL FOLIAGE, For the Use of Sculptors, Carvers, Stone Masons, &c. Tlie Designs are Drawn from the Foliage of the Maple, Oak, Hawthorn, Geranium, Ivy, Vine, Strawberry, Sea-Weed, &c. A LIST OF WORKS PUBLISHED BY Pnhlished in 1859. Complete in One Large Volume, Price Two Guineas, MEMORIALS, ORIGINAL AND SELECTED, A Series of nearly One Hundred Designs for Monuments, Tombs, Tablets, Gravestones, Panels, Scrolls, Alphabets, &c., &c. With Plans and Details Quarter Full Size. This will be found a most comprehensive and useful Volume, the Details given saving much time and labour in carrying out the Designs. Published in 1859. Complete in One Volume, Price Five Shillings, EPITAPHS Collected from the Cemeteries of London, Edinburgh, Glasgow, Hull, Leicester, Sheffield, Manchester, Nottingham, 9 Birmingham, Derby, &c., &c. WITH ORIGINAL AND SELECTED EPITAPHS BY Tennyson, Longfellow, Montgomery, Mrs. Hemans, Eliza Cook, Words- worth, Robert Nicoll, Charles Mackay, Mrs. Norton, &c., &c. This Work contains more than One Thousand Epitaphs, suitable for all classes. Published in 1862. DEDICATED BY PERMISSION TO THE RIGHT HONOURABLE THE EARL OF ZETLAND, GRAND-MASTER OF THE FREEMASONS OP ENGLAND AND WALES. Complete in One Large Volume, Handsomely Botuid, Price Two Guineas, IN MEMORIAM, A Series of Original Designs for Monuments, Tombs, Tablets, Crosses, Gravestones, &c., of a plain useful character for general purposes. To which are added a Collection of Designs suitable for Freemasons, Odd Fellows, Foresters, &c., forming a complete guide in every department of Monumental Masomy for the Cemetery or Churchyard. JOSEPH B. ROBINSON, SCULPTOR, DERWENT STREET, DERBY Pithlished in 1862. Complete in One Volume, Price Five S hillin gs, TRADE SECRETS. For Sculptors, Statuaries, Carvers, Stone Masons, Engravers, Builders, Painters, Polishers, &c., containing a Collection of Alphabets, and a large amount of Useful Information connected with the above Trades. Also a Description of the various Stones used for Monumental Work in the United Eungdom, with the Price per foot at the Quarries, &c, A most Valuable and Useful Work. The Author will send any of the above Works Free by Post on receipt of Post Of&ce Order for the Amoxmt. Mr. Robinson also begs to announce, that he has in Stock a large Collection of Drawings for Monuments, Tombs, Gravestones, Vases, Fountains, Chimney- Pieces, Pedestals for Sun-Dials,