INDEX TO VOLUME XIX. 



A, 



Academy of Natural Sciences of Phila- 

 delphia, notice of, 88, 355. 



Adulterations in chemical substances and 

 medicines, 70. 



Aix waters, sulphuric acid from, 176. 



Albany Institute, transactions of, 173, 360. 



Alcohol, impurities in, 71. 



Aldebaran, occupation of, 169. 

 Almond, bitter, 384. 



American Annals of Education, &c. 174. 



steel, 175. 



Ammonia, impurities in, 72. 



Animals, rules for the preservation of, 



in Nat. Hist., 52. 

 Aonals of education and instruction, 357. 



Anthophyllite, hydrous, of Dr. Thomson, 

 359. 



Anthracite region in Pennsylvania, 1. 



Aqueducts, Roman, 389. 



Aranea aculeata, 61. 



Arsenic, tests for, 339. 



Arrow root, impurities in, 72. 



Arts, Chemistry of, 362. 



Aurora borealis, essay upon, 235. 



Brown, Lt. on the relative strength of 

 certain kinds of timber, 228. 



a 



Calomel, impurities in, 72. 



Camphor, 380. 



Caoutchouc, method of working, 195. 



Cast steel, fabrication of, 284. 



Cement from iron filings, 190. 



Central forces, 46. 



Chart of Long Island Sound, 163. 



Chemistry, elements of, a new work, 343. 



Chemistry of the arts, 362. 



Chile, on the plants of, 63, 299. 



Chimnies, mode of extinguishing, 186. 



Chloride of lime in U. S. Navy, 164. 



— — bleaching rags, 166. 



., disinfecting powers of, 



177. 



Chloride of soda, use of, 365. 

 Chlorine, phosphorus and sulphur, a new 



compound of, 382. 

 Chromate of lead, impurities in, 73. 

 Clemson, T. G., on the Hartz, 105. 

 Coal measures in New York, 326. 



Pennsylvania, 21. 



B. 



Barley sugar, crystallization of, 177. 

 Barn Swallow, 172. 



Bedford and Bath spiings, (Pen ) 97, 204. 

 Beet sugar, 203. 



Bertero, Dr., on the plants of Chile, 63, 

 299. 



Binomial theorem, demonstration of, 50. 



Birds, preservation of, in Nat. Hist. 52. 



Blasting rocks, 199. 



Blood, coloring matter of, 381. 



Boring for salt water, 203. 



Bottl 



Bowd 



es, strength of, 196. 

 ^itch, N., translation 



Coal mine on lire, 386. 



Common salts, detection of impurities in, 



178. 

 Comstock, Dr. on explosions in blasting 



rocks, 199. 

 Comstock, Dr. on the steam boiler, 176. 



Copaiva, impurities in, 73. 

 Crystallization, tendency of salts to, 381. 

 Cuvier, Baron, memoir of Count Rum- 

 I ford by, 28. 



D. 



ique Celeste by, 202. 

 Bromine, atomic weight of, 3S3. 



" — discovery of, in the Baltic, 382. 



Brown, J. B. on a singular impression in 



marble, 361. 



Darlington, Dr. notice of the Encyclope- 

 dia of plants by, 160. 

 of the Mecan- Decrepitation of common salt, 198. 



Diamond mines in Russia, 199. 

 Disinfecting powers of Chloride of Lime, 



177. 

 Dyspepsia, Prof. Hitchcock on, 167. 

 Dix, Miss, on Aranea culeata,61. 



