476 



Index. 



Boracicacid, atomic weight of, 131 — com- 

 position of, 134. 



Borate of ammonia, composition of, 131. 



Borax, composition of, 132. 



Bournonite, on the primary form of, 360. 



Bracconnot, M. H. on the crystallization 

 of sugar, under peculiar circumstances, 

 235. 



Brazil woods, purification of, 317. 



C. 



Cachmere goat, 396. 



Calomel, on the name of, 427. 



Capillary copper, on Mr. Smithson's hy- 

 pothesis of the formation of, 29 1 . 



Carbon, iodine, and hydrogen, on a new 

 compound of, 1 1 8. 



■ and chlorine, on two new com- 



pounds of, 104 — perchloride of, on, 

 105 — protochloride of, 114. 



Carbonate of lime, composition of, 1 34. 



— — — magnesian, on, 415. 



Carburet of nickel, oa the, 02. 



Carburetted hydrogen gas, specific gravity, 

 and composition of, 170 — process by 

 which it is evolved in natural operations, 

 171. 



- ought to be con- 



sidered as a distinct species, 181. 



Charcoal and hydrogen, on the aeriform 

 compounds of, 167. 



Charlton, Mr. J. P. on the production of 

 colours by mechanical division, 182 — 

 on the black enamel obtained from 

 platina, 337. 



Chemical compounds, on a method of ex- 

 pressing them by algebraic characters, 

 212. 



Children, J. G. Esq . on the nature of the 

 pigment in the hieroglyphics on the sar- 

 cophagus, from the tomb of Psammis, 

 389. 



Chloride of mercury, composition of, 127. 



Chlorine and carbon, on two new com- 

 pounds of, 101 — notice of a new com- 

 pound of, 1 50. 



Chossat, Dr. on the influence of the ner- 

 vous system on animal heat, 37. 



Chromic and sulphuric acids, 155. 



Cicatricula, of the egg, 2. 



Cinchonin, process for extracting it from 

 cinchona, 316 — sulphates of, analysis 

 of, 3 16. 



Cinnamon, oil of, on a crystallized subli- 

 mate from, 222. 



Citrate of lead, composition of, 1 40. 



Citric acid, atomic weight of, 139. 



Clarke, Dr. examination of the stone used 

 in the construction of the Theban soros, 

 57 — on the chemical examination, cha- 

 racters, &c. of the arragonite, 57 — on 

 magnesian carbonate of lime, 415 — on 



crystallized plumbago, 415 — on some 

 Cumberland minerals, 4 1 5. 



Cocoa nut oil, on gas from, 235. 



Colours, their production by mechanical 

 division, 182. 



Comets, 469. 



Congreve rockets, 467. 



Conybeare, Rev. J. J. on the geology of 

 the neighbourhood of Okehampton, 

 Devon, 161. 



Copper, effects of, on vegetation, 77. 



Corrosive sublimate, composition of, 127. 



Crystallized plumbago, 41 5. 



Cyanogen, on compounds of sulphur with, 

 236. 



Cyanurets, on the preparation of the alka- 

 line, by means of prussian blue, 13. 



of iron and cobalt, with sulphu- 

 ric acid, on the compound of, II. 



and barium, with sul- 



phuric acid, on the compound of, II. 



and lead, with sulphu- 



ric acid, on the compound of, 1 1. 



and potassium with sul- 



phuric acid, on the compound of, 10. 



and sulphuric acid, on the com- 



binations of, 9. 



of iron and silver with sulphuric 



acid, on the compound of, 12. 



of mercury with sulphuric acid, 



on the compound of, 12. 



D. 



Daubeny, Dr. on arragonite, 220. 

 Davy, Sir H. on the magnetic phenomena 



produced by electricity, 8 1 . 



Mr. E. on milk, 470.. 



Decimals, circulating, on, 16. 



Deuchar, Mr. notice of a new^ mineral 



substance, 236. 

 Dingier, Dr. on the purification of Brazil 



woods, 317. 

 Discovery, Russian voyage of, 397. 

 Division, miechanical, production of co- 

 lours by, 182. 

 Dollond, Mr. G. account of a micrometer 



made of rock crystal, 229. 

 Dulong and Berzelius, on the composition 



of water, and density of some elastic 



fluids, 48. 



E. 



Eclipse, solar, in America, 396. 

 Edinburgh, Medico-Chirurgical Society 



of, 396. 

 Education of mechanics, 395. 

 Egg, on the physiology of, 1 . 



shell, composition of, 5. 



Electricity, on the magnetic phaenomena 



produced by, 81. 

 Electro-magnetism, on, 321. 



