PROPOSALS, For Sale by SUBSCRIPTION, Of Four Sorts of Curious Perspective-Glasses, NEWLY INVENTED;  
VERY convenient for Ladies and Gentlemen, to take a view of any Persons, at the Park, the Play-Houses and such other public Places; though for a great while, or very often, yet modestly, without any Impertinent Staring upon them; no other Persons, even if they had got these new Glasses, being able to discover, whom the Spectator looks at.  
EACH of these Perspective-Glasses, being fitted into a Case made of Metal, is short and commodious to be held in the Hand, like ordinary Opera-Glasses. But by the help of this new Contrivance, the Spectator may( though he seems to look forward, upwards, downward or towards the middle, between both) without changing the Situation of his Eye, see the Objects that are at his right or left Hand, upwards, downward or between both. He may likewise ( when he is supposed to look towards his right or left Hand) without moving his Head or Eye, see the Objects, which are before or behind him.  
THE First sort of these Glasses, in a Case Two Inches long, makes the Objects appear as they are seen by the naked Eye, without magnifying or diminishing them. It is serviceable to such as are not Short-sighted, to take a view of others, without being observed by any.  
THE Second sort makes the Objects appear more distinct, but somewhat less than Life, and serves instead of a Concave-Glass, for such as are Shot-sighted. It is as short as the first sort.  
THE Third sort, being Three Inches and an half in length, makes the Objects appear as big and as near again, as they are seen, without the help of Perspective-Glasses, or even with the help of the common Concave-Glass. It is proper for all sort of Short-sighted People, for whom it is often difficult, to find a hollow-glass exactly fitting: 'Tis also useful for such as have a good Sight, but cannot see very distinctly those Objects that are twice as far distant, as the bare Eye requires.  
THE Fourth is in length Four Inches, and represents the Objects as big and as near again, as the Third sort does; and such Objects as are distant from the Eye three times as far, as 'tis requisite to see distinctly, are thereby made to appear clearer, nearer, and as big as they would be seen, if they were twice nearer to the naked Eye.  
SOME other Proprieties of these Glasses, would be to long to be mentioned here.  
THE Inventor intends to Sell by Subscription, at least One Hundred of every sort of these Perspective-Glasses; He may therefore be spoken with 〈…〉 day and 〈…〉 day from 〈…〉 to 〈…〉 of the Clock, at 〈…〉 Coffee-House, 〈…〉 or 〈…〉 day and 〈…〉 day from 〈…〉 to 〈…〉 at 〈…〉 House, 〈…〉 and at Mr. Dillon's, next door to the White Hart, about the middle of Long-acre: where Subscriptions are taken in, and Proposals may be had, from 5. to 8. at night.  
EVERY Subscriber to pay down half a Guinea for each Perspective-Glass, at the time of Subscription, and half a Guinea, when he receiveth it, which will be as soon as the Number of Subscriptions is full.  
HE that Subscribes for Nine, to have a Tenth Gratis.  
THE Niceties in the Form and in the Disposition of these Perspective-Cases, as well as the Clearness, true Figure and Proportion of the Glasses belonging unto them, will prove too difficult and chargeable to such as shall endeavour, after having got some Model by Subscription, to imitate it Imperfectly, to no purpose. The Inventor designs to show the way of trying the Goodness of his Perspective-Glasses; and intends to publish some other useful Inventions and Improvements, if this be well accepted.   

PROPOSITIONS Pour Vendre, par SOUSCRIPTION, Quatre sorts de Lunettes d'Approche, NOUVELLEMENT INVENTÉES.  
CURIEUSES& très-commodes pour ceux qui au Parc, à l' Opera,& en tells autres endroits publics, veulent voir fixement, ou méme souvent, less Autres: Sans qu' il paroisse aucun dessein de less envisager; less Autres ne pouvant jamais decouvrit, où le Spectateur regard, quamd méme ills auroient de ces nouvelles Lunettes.  
CHACUNE de ces Lunettes, ëtant mise dans des tuiaux faits de Metal, est court& peut se tenir commodement dans la main, comme less Lunettes ordinaires, usitées à la comedy. Mais par le moyen de cette invention, le Spectateur pourra( quamd il semble aux Autres, qu' il regard par devant; tout droit, en haut ou en bas) sans changer la Situation de son oeil, voir less Objets, qui sont à sa main droite, ou à sa gauche; en haut, en bas ou entre deux. De méme( quamd less Autres croyent, qu' il regard vers sa droite ou vers sa gauche) il pourra voir less Objets, qui sont derriere ou devant lui. Ces Lunettes on't beaucoup d'autres proprietés, dont on ne parley point ici, pour eviter d●étre long.  
LA premiere sort de ces Lunettes, mise dans un ruiau long de 2 pouces, represent less Objets, comme ills paroissent à l'oeil, sans aucune augmentation ou diminution optique. ell ●ert pour ceux qui n'ont pas la veuë court, mais qui l'ont longue& bonne; pour voir less Autres, sans qu' ills s' en apperçoivent.  
LA second, aussi court queen la premiere, fait voir less Objets, plus clairement& un peu plus petits, qu' ills ne le sont naturellement. ell sert au lieu des Lunettes Concaves, pour ceux qui on't la veve court.  
LA troisiéme, longue de 3½ pouces, fait paroitre less Objets, une fois plus grands& une fois plus proches; qu'ils ne paroissent, sans le secours de l'optique, ou méme par less Lunettes Concaves. ell est proper pour toute sort de veuë court pour laquelle on a souvent beaucop de pain, à trouver des Lunettes Concaves, qui soient exactement propres. ell sert aussi à ceux qui on't la veve bonne, mais qui ne peuvent voir distinctement less Objets, eloignez une fois plus, queen l'oeil le requiert.  
LA quatriéme, longue de 4 pouces, fait voir less Objets, une fois plus grands& une fois plus proches, queen la troisiéme sort; c'est pour cela, qu'elle represent ces Objets, qui sont deux fois plus eloignez de l'oeil, qu' il ne le faudroit; comme s'ils etoient deux fois plus proches,& dans leur grandeur natural.  
L'Inventeur se propose, de vendre par Souscription, au moins une centaine de chaque sort de ces Lunettes; c'est pourquoi il se trouvera le 〈…〉& le 〈…〉 depuis 〈…〉 hours du matin jusqu'à 〈…〉 au Caffë de 〈…〉 ou le 〈…〉& le 〈…〉 depuis 〈…〉 hours jusques à 〈…〉 au Caffe de 〈…〉& sur le soir, depuis hours jusqu'à 〈…〉 chez 〈…〉  
CHACUN, qui Souscrira, payera d'abord une demi Guinée pour chaque Lunette,& une demi Guinée davantage, quamd on lui en livrera une, c'est à dire, quamd le nombre proposë des Souscriptions sera rempli.  
ON donnera Gratis la Dixiéme à celuy qui Souscrira, ou fera Souscrire, pour neus.  
LE raffinement de la form& de la Disposition des tuiaux, de meme queen la Perfection des Verres, leur figure& leur proportion, donneront des difficultés à ceux, qui voudront tacher, de less imiter en quelque manie●e moins parfaite, qui leur deviendra inutile, aprez beaucoup d'embaras& de depenses; c'est pourquoi l'inventeur, en delivrant ses Lunettes, fera connôitre leur Perfection; qui se propose, de publier d'autres inventions utiles, si celle-ci est bien receuë.