223 LIBRARY OF CONGRESS 021 928 609 Conservation Resources Lig-Free® Type I Ph 8.5, Buffered UllAlimiAiilllillAtllllllHAtl,li Portland Stone, {BETON AGGL OMERE.) ARGUMENT SHOWING ITS SUITABILITY, ABOVE ALL OTHER MATERIAL, FOR {jometerie& With Special Reference to the Sample Furnished by GEORGE H. MOORE, OF WASHINGTON, D. C. Made before the Senate Committee on Military Affairs BY LOUIS BAGGER . tr bOi, WASHINGTON: PBINTED BY POWKLIi & GlNCK, 630, 632 F Street. 1873. o ' e\ is perfect. Upon this point General G-illmore says as follows : " Chemical tests have shown this beton to be practi- cally impervious to water. Two small specimens, each weighing about 1\ gramme's, were tried by Dr. Isidor Walz, chemist, of New York city. Their specific gravity was 2,305. They were immersed in water fifteen minutes, and then kept four days in air, saturated with moisture. One of the specimens did not increase in weight at all during the interval, while the other absorbed 16-100 of one per cent, of moisture. This material, therefore, possesses all the characteristic properties of durability? being dense, hard, strong and homogeneous ; and there w T ould appear to be no reason for supposing that it may not, with entire safety, be applied to out-door construc- tions, even in the most northerly portions of the United States." Again I quote from Gillmore : " Pieces of statuary and other specimens ornamented with delicate tracery, have been exposed for five consecu- tive winters to the weather in New York city, without under- 11 going the slightest perceptible change." (p. 44.) And again, when speaking of the uses of this excellent material in Europe and elsewhere : " The most important and costly work that has yet been undertaken in this material is a section, thirty-seven miles in length, of the Vanne aqueduct, for supplying water to the city of Paris. * * * Water was let into a portion of this pipe in the spring of 1869, and Mr. Belgrand, inspector-general of bridges and high- ways, and director of drainage and sewers of the city of Paris, certified that the impermeability appeared complete. Another interesting application of the material has been made in the construction, completed or nearly so*, of the light-house at Port Said, Egypt. It will be one hundred and eighty feet high, without joints, and resting upon a monolithic block of belon, containing nearly four hundred cubic yards. In design it is an exact copy of the Baleines lighthouse, executed after the plans and under the orders of M. Leonce Eegnaud, engineer-in-chief. An entire Gothic church, with its foundations, walls and steeple, in a single piece, has been built of this material at Vesinet, near Paris ; the steeple is one hundred and thirty feet high, and shows no cracks or other evidence of weakness. Mr. Pallu, the founder, certifies that ' during the two years consumed in the building of this church, the beton agglomer6, in all its stages, was exposed to rain and frost, and that it has perfectly resisted all variations of temperature." It will be patent to all, that in a tomb- or headstone im- permeability is of even greater moment than strength to resist an extraordinary amount of weight, and that in de- ciding the durability of a headstone, this is one of the first and most important considerations to be taken into ac- count. The few extracts above given from a standard and official authority like Gillmore, will doubtless satisfy the *This was written in 1871. It is now completed. 12 most skeptical upon this point; but if it should not, Mr- Moore will, with great pleasure, afford everybody who desires it, an opportunity to test his headstone, and the material he proposes to use in them, upon this and all other points that eome under the head of durability; the decency and cheapness of his headstone will speak for themselves, and require but little comment. Numerous other examples are given by Gillmore to show the impermeability and power to resist an enormous crush- ing weight of this material, which is in this country com- monly known as " Portland Stone," the term of bLon ac/- glornere being rather frenchy for an American or English tongue; but time prohibits my giving any more at pres- ent, All the works executed in Portland Stone, of which descriptions are given in Gillmore's report, with the excep- tion of those at Port Said, in Egypt, were visited by him in person, in the year 1870, and, he says, u these state- ment are based upon close observation and personal knowl- edge ! " Summing up his chapter on the uses of Portland Stone in Europe and elsewhere, General Gillmore says, (p. 48) : "Many other interesting applications of this material were examined, of which it is not deemed necessary to make any special mention, except that in combined sta- bility, strength, beauty and cheapness, they far surpass the best results that could have been achieved by the use of any other materials, whether stone, brick or wood. In the numerous and varied applications which have been made of it in France, it has received the most emphatic com- mendations from the government engineers' and archi- tects." Now, what is it that is especially and most particularly required of headstones for the graves of our fallen soldiers ? Is it not the highest degree of stability, strength, beauty and cheapness combined ; or, in the words of the Secretary of War : durability, decency and cheapness ? And that is ex- 13 actly what we propose to furnish. On the authority of Gen. Gillmore, let alone upwards of a dozen eminent French, English and German engineers, civil and military, the Portland Stone, or b4ton agglomere, possesses these essen- tial, nay, absolutely necessary, elements to a greater extent than any other materials, whether stone (natural), brick or wood. What more can be said in its favor, and is a more convincing proof required of its superiority for this purpose ? Stability, strength, beauty and cheapness, are exactly what is required of these headstones, and they are exactly the elements which our material possesses, according to Gill- more et al., in a higher degree than natural stone or any other similar substance. In summing up the numerous advantages of the Port- land Stone, Gillmore says: "For numerous purposes beton agglomere possesses not only great comparative cheapness, but all the essential merits of stone with respect to strength, hardness and durability ; while for ornamental work of every description within the prov- ince of the architect or engineer, it possesses advantages peculiar to itself, and not equally shared by other mate- rials." The beton agglomere used in France, or Coignet Beton, is not composed altogether of Portland Cement and sand, the cement being replaced to a greater or less extent, by hydraulic lime, owing to the diiference in cost of the two materials. The hydraulic lime costs only about one-half as much as Portland Cement, but the beton made from this is inferior to that in which pure cement and sand are used alone, without any admixture of hydraulic lime. Upon this point General Gillmore says, (p. 50 of his Report) : " When great strength and hardness are re- quired, the lime must be replaced, in part at least, by Port- land Cement, and the best results are attained with Portland Cement alone.''' In Mr. Moore's specimen no lime, hydraulic or other- 14 wise, has beeu used. The Portland Stone he proposes to use for the Headstones, contains only pure Portland Ce- ment and sand, in the proportion of one part of the former to two and a half parts of the latter. When such magni- ficent results have been attained in Europe, with a matrix of lime and only a small, portion of the costly cement,* the superior merits of the material employed in our sample may he easily inferred. What I have stated so far, and substantiated by refer- ence to two standard reports by officers of the United States Government, has had regard to the item of dura- bility only. I think enough has been said, and sufficient testimony adduced, to convince every fair-minded person that, upon this point at least, the material furnished by Mr. Moore fulfills more than the needed reqtiirements. I have taken that point first because it is the first mentioned in the letter from the Secretary of War to Congress, ask- ing for instructions in the premises ; and because it is, probably, the most important. Dismissing it, I shall take up the next item of decency, by which I presume is meant respectability in regard to size, design, and general appear- ance. On this point, as also upon the following point of cheapness, not much need be said, as our sample and bid speak for themselves in those respects. Those who have not seen the sample will obtain a good idea of its size and appearance by reference to the cuts, which show both a side elevation of the headstone and perspective sketch of a stone placed in position. The figures underneath the cuts give the actual size of the headstones, whose weight is about three hundred pounds each. *The beton agglomerS used in the construction of most of the public ■works (including the military barracks of Notre Dame, etc.) in France, is composed of tive volumes of hydraulic lime, in powder, and only one-fourth volume of cement. 15 Length of Base, 27 inches. Width of Base, 22 inches. Height of Front, 7 inches. Height of Back, 9 inches. SIDE ELEVATION. fLength of Base, 27 inches. Width of Base, 22 inches. Height of Front, 7 inches. Height of Back, 9 inches, As will be observed by reference to the cuts, the design of the stone is such as will insure its being at all times and under all circumstances, kept in its proper position. This is further facilitated by its great weight, which has also the advantage of rendering it difficult of removal. If a stone of lesser weight is adopted, there will not be one left on a single grave in the more distant and exposed ceme- teries in the territories and elsewhere, where building stone is scarce. But this is not the only advantage possessed in its weight and design. It will be obvious that there is no possibility for this stone, when placed in position at the head of a grave, being displaced by frost, wind, or from 16 other causes. The frost may lift it up a little, but when the ground thaws out, it will immediately settle back into its old position. No hurricane is powerful enough to dis- place it, nor is it easily covered by the grass and under- growth of the cemeteries. It is very different with the flat tablets, or slabs, stuck on end in the ground at a cer- tain angle, which is invariably affected by the changing conditions of the ground. Immediately after the placing, stones of such a design may look well enough, and stand exactly at the same angle and in a row like well drilled soldiers ; but wait until the snow storms and frosts of winter, and then see the results. The upheaval of the ground throws them naturally oat of position ; one will stand one way and one another, each one at a different angle with the ground and its neighbors. And a'row of graves thus furnished will present a most unsightly ap- pearance. The wind also, coming with all its force against the fronts or backs of such slabs, will have a visible and disastrous effect, and affect their position and the symme- try of the graveyard in a very mournful sort of manner. It is true that these drawbacks may be obviated to some extent, though never perfectly, by using a very heavy slab, or tablet, stuck deeply in the ground or set in a base. There are many very handsome tombstones of such a de- sign in our churchyards that have withstood the action of the frosts and hurricanes ; but this is necessarily done at the expense of cheapness. No better proof of this is needed than an examination of the bids. The tablet specimens of a size to be at all useful, that is, going deep enough in the ground to render them comparatively station- ary, and at the same time showing a fair and respectable portion above ground, range from six and a half to ten dollars and more apiece. There may be specimens that cost less, and go sufficiently deep into the ground to insure stability; but then they merely pop their heads a few inches above the ground, and must perennially disappear 17 below the grass covering the mounds, especially in locali- ties where the cemeteries are not so well cared for as at Arlington and elsewhere in the vicinity of large cities. Now, a headstone that changes its base without regard to that of its comrades to the right and left, or immediately in the front or in the rear of it ; or one that from its in- sufficient size may be mistaken for a mushroom, or a stake to tether cattle by, cannot possibly lay claim to decency. It may be durable and cheap enough, but cannot possibly be decent. No headstone at all would be far better than an excuse for one. It is unnecessary to dilate at length on the third and last point: that of cheapness. Where " cost is no object," granite and marble monuments may be erected, of such a size and design as to fulfil the requirements of durability and decency to the greatest extent : but when cheapness is to be taken into consideration, this cannot possibly be done. You can have a cheap marble or granite headstone, but only at a sacrifice of one or both of the equally, if not more, important elements of utility and decency. Now I claim for b£ton agglomere' and for our sample that it em- bodies, in an eminent degree, all the requirements of du- rability, utility, decency and cheapness ; or/as General Gill- more says : " that in combined stability, strength, beauty and cheapness, they " (meaning sundry applications of Portland Stone, including expressly monuments, statuary, &c.,) "far surpass the best results that could have been achieved by the use of any other materials," not excepting the natural and always costly stone. In conclusion, I would only respectfully call the atten- tion of all those who are disposed to feel unfriendly to- wards the Portland Stone, merely because it is, as they say, " artificial," to the fact that common brick, the material most extensively employed in the construction of our 18 dwellings and other edifices, is artificial stone also, made of clay prepared and manipulated in a particular manner, and afterwards undergoing certain processes, such as dry- ing, burning or baking, &c; and that it has been defi- nately ascertained that the pyramids of Egypt — those mammoth structures whose solidity have withstood for centuries the ravages of time and mankind — are constructed of artificial stone, made of the sand of the desert, cemented together in blocks of suitable size and shape, by the aid of some cement known to the Egytians of that day. Some scientists who have carefully examined and analyzed pieces of stone from the pyramids of Gizeh and Thebes, assert that the cement emplo} T ed in the manufacture of this artificial stone is a peculiar kind of pozzuolana, of volcanic origin, not unlike natural cement in its composi- tion and properties. Where they obtained the cement from, is, however as yet, a mystery, which it remains for future Egyptiologists to solve. But the fact remains, that structures made of artificial stone, centuries ago, still exist in almost their original magnitude and magnificence, while temples and palaces of marble and other natural stone, erected at a much later day, have long since fallen victims to the tooth of time and the elements. While of Diana's marvel of marble and porphyrias, and gold and silver, in Ephesus scaree a vestige remains, still stands to-day in all their grim solidity and compactness, the pyramids, built not of marble, nor of granite, but simply of artificial stone — semper idem — " always the same ! "