Analyjjs of Human and Animal Bones. I'^t 



fiiatik likcwife informs me, thatafter the combuftion of good 

 gunpowder under mercury, no water is ever perceptible. 



References to the Figures of the Glafs Globe, ^c. mentioned 

 in Seaion VII. (See Plate VIII.) 

 A, a ball or globe of glafs, nearly half an inch thick, and 

 feven inches in diameter. It has two necks, on which are 

 cemented the brafs caps B, C, each being perforated with a 

 female fcrew to receive the male ones D, E: through the 

 former a fmall hole is drilled ; the latter is furniflied with a 

 perforated ftud or (hank G. By means of a leather collar H, 

 the neck C can be air-tightly clofed. When a portion of 

 the powder is to be exploded, it muft be placed on a piece 

 of paper, and a fmall wire laid acrofs the paper, through the 

 midft of the powder : the paper being then clofed, is to be 

 tied at each end to the wire, with a lilken thread, as (liown 

 at I. One end of this wire is to be fattened to the end of 

 the fliank G, and the fcrew D inferted to half its length into 

 the brafs cap B; the other end of the wire, a, by means of 

 the needle K, is to be drawn through the hole F. The fcrew 

 E being now fixed in its place, and the wire drawn tight, it 

 is to be fecured by pufhing the irregular wooden plug L into 

 the aperture of the fcrew D, taking care to leave a paflage for 

 air. The ftop-cock M, the fe6lion of which is (hown at N, 

 is now to be fcrewed on to the part D, which is made air- 

 tight by the leather collar b. The glafs tube O is bent, that 

 it may more conveniently be. introduced under the receiver 

 pneumatic apparatus. P fhows the manner of conneft- 

 ing the glafs tube with the ftock-cock^ 



VI. Comparative Analyjts of Human Bones, and thofc of dif- 

 ferent Animals, By C. Merat-Guillot, Apothecary 

 at Auxerre *. 



B. 



*UFFON fays, *' We ought to colleft objefls of every 

 kind, to compare them, to ftudy their nature, and from their 

 combined relations to deduce that information which may 



* From the Annaln de Chhnie, No. i oo. 



S 3 enable 



