INDEX. 



JSoulton, Mr. 414 



Bowler, Mr. defcription of his apparatus 



for locking wheel-carriages, 177 

 Brandy from the carobc-tree, 30a 

 Brafs, expanfionof by heat, 230 

 Brouffbnel, 142 

 Bucholz, on pruffic acid and its combina- 



nations, 278 

 Buee, Abbe, on themlneralogical fyftems 

 of Rome de Tlflc and the -Ahbc Hauy, 

 a6, 78 

 Buffon, 27 

 Bulbs, vegetable, ferifli without bxigcn^ 



218 

 Burnenj, 183 



Camphor, its ufe in the preparation of 



copal varnifli, 155 

 Cantharides, on the virtues and principles 



of, 41 

 Carbon in vegetables, prize queftion on 



the fourccs of, 141 

 Carbonate of cerium, 297, 299 

 — of lime, adion of hgat on, 99 



Carbonic acid gas, aftion of charcoal on, 



463 

 Carobe-tree, brandy from the, 30a 

 Caffegrain's fpeaking- trumpet, 283 

 Cavalb, 19 



Cerium, a new metal, defcription and ai^* 

 alyfis of its ore, 290. — Origin of the 

 name of, 294 

 Chalk, threat contrafiion of by heat, 100 

 Chamoying of leather, memoir on, 251 

 Chaptal, 108 

 Charcoal, on its power of abforbing the 



gafes, 255 

 Chemiftry, vegetable negkfted, 68 

 Chladni, 113 

 Citrate of cerium, 300 

 Ci 1-. on the horizontal moon, 235 

 Clafps, acting on the naves of wheel car- ' 



riages, 177 

 Clement, 9* 



Clifford, Mr. on mincralogical fyftems, 

 26 



4 



Clock, new ftriking part for a, 9^ 

 Clothing, experiments on its cffe£ls on 



the paffage of heat, 60, 201 

 Coal, produftion refembling, blind, 103. 



— Is probably of animal as well as vege* 



table origin, ib. 

 Cobalt, method of obta'ming pure, 305 

 Cold, the contraftion of bodies by, fup^ 



pofed to prove the want of contaft in 



their elementary parts, 247.— Argu-,. 



ments againft this opinion, 249 

 Colours of natural bodies, remarks on, 



139 



Cnmpenfation pendulum, new, 225 

 Compounds, mineral, theory of, 98 

 Compreffion, its effefts in modifying thofe 

 of heat, 98. — On the air in an air-gun» 

 30a 

 Condenfation, is not a proof of the want 

 of contad in the elementary parts of 

 bodies, 249 

 Condenfcr, compound eleftrlcal, 1$ 

 m — of forces, 275 



Copal, method of diflblving it in fpirit of 



turpentine, 154 

 — — varniihes, on M. Tingry's errors re* 



fpeding, 151 . 



Copper, method of communicating the 

 properties of fteel to, 267.— Method of 

 coaring it with platina, 303. 

 Coulomb, 113 

 Counter, Mr. 5, 124. 

 Cronftedt, 27, 291 

 Cryftallography, on the theories of, 27. 



—Laws of, 78, 

 Cubes, on the computations of tables of, 



4» "3> '7J 



Cumming, 93 



Curaudau, application of his pyrotechnic 



obfeivations to evaporating furjuccs, 



204 

 Cuthbertfon, Mr. »4, 246 

 Cuvicr, 142 



D'Alerabert, 87 



Dalton, Mr. bis obfcrvatipjxs on Mr. 

 Cough'c 



