INDEX. 441 



Blair (William, Esq.), remarks on his system of secret writing 



by ciphers, 25-27 

 Bleaching 'Powder, analysis of, 17,5 



Boa- Constrictor, killed at the island of St. Vincent, notice of, 428 

 Boussingault (M.), experiments of, on alloys of steel, 316-318 

 Brain, microscopical observations on, 128 

 Brasier (Mont), notice of, 423 



Brazil Woods (inferior), process for improving the dye of, 332 

 Brinkley (Rev. Professor), on an easy method of computing the 



aberration of the stars, 151-154 — notice of his observations 



for investigating the effects of the parallax and aberration of 



the places of certain fixed stars, 374 

 Brown Spar of Mexico, analysis of, 272-274 

 Brugnatelli (Dr.), account of a new salifiable base, 177, 178 

 Brunton (Mr.), notice of his contrivance for consuming smoke, 



350— its advantages, 350, 351 



Caloric, observations and experiments on, 311-314 



C'oriow and Chlorine, on two new compounds of, 129, 130 — 

 experiments on another new compound of, 375 



Carbonate of Magnesia, solubility of, in water, 408 — on the 

 solution of the carbonate of lime, ibid., 409 



Cariwre^ of Nickel, how procured, 173 



Cary (Mr.), notice of his examination of Ramsden's dividing 

 engine, 381-384 — results of his measures. 387 



Caulifiotvers, hint for the preservation of, 406 



Celebes, notice of an earthquake on the coast of, 427 



Census of America, 432 



Cererit (cerite), analysis of, 262-264 



Cerium, properties of the oxide of, 264, 265 



Charcoal and hydrogen, on the aeriform compounds of, 133, 134 



Chemical Science, mi?>cc\\2inQ0\.\% intelligence in, 169-187,407- 

 422 — progress of on the continent, 306-342 — remarks on 

 chemical empirics, 354, 355 



Chenevix's (Mr.) ciphers, for secret writing, remarks on, 22-24 



CAj/rfrew. (J. G.) translation of Key's essays on the calcination 

 of metals, &c. 54-64, 294-299 



Chimneys, importance of attending to the construction of, espe- 

 cially for furnaces, 352-354 



Chlorine, on the use of, in hydrophobia, 190 — new compound 

 of it and of carbon, 37.5 — heat produced by it, 413 — explo- 

 sion of, and of hydrogen, ibid. 



Chondrodite, analysis of, 329 



Chromium, on the compounds of, 171, 172— oxide of, 172 



alloys of, with iron and steel, 173, 174 — on various com- 

 pounds of, 317-319 



Chronometers, effects of the proximity of masses of iron on 

 the rates of, 374,415 — on the chronometers used in the Arctic 

 Expedition, 402-404 



Vol. XII. 2 G 



