INDEX. IS 



the poison, ii. 332-335. Results of experiments with the 

 poison, 336-339 



Apatite of Devonshire, account of, iv. 369-372 



(conchoidal) analysis of, from Zillerthal, xii. 271, 272 



Aphonia, or loss of utterance, cured by electricity, ii. 204 



Apograph, notice of, xii. 169 



Apothecaries' Company, historical notice of, xvi. 193-195. In 

 what manner its aifairs are conducted, 196-198. Description 

 of the laboratories of, 199-202 



Apparatus for distilling sea-water, vi. 147, 148 



(new) for the combustion of the diamond described, 



ix. 264-265. 



Apple-trees, blight in, how prevented, v. 357 



' • bread, notice of, xi. 384 



Aqua Regia, observations on, i. 67, 68 



Aquatic plants, effects of, ii. 55 



• • salamander, the process of the re-production of the 



members of, described, xvi. 84-96 



Aqueduct of Alcantara, Portuguese description of, v. 283. Ac- 

 count of by Mr. Rennie, 2S4. Dimensions of its arches, 285 

 Appearance and analysis of its w^aters, 287. Description of 

 the reservoir, 289. Inscription on its south side, ibid. 290 



Arabic digits, conjectures respecting the original formation of, 

 i. 166-168. ii. 147. v. 321, 322 



^— grammar, ix. 428 



Arago (M.), experiments of, on the influence of copper, &c., on 

 the magnetic needles, xix. 147 



repetition of his experiments on the magnetism developed 



during the act of rotation, 276, 277. His experiments on 

 the mutual action of magnetic and unmagnetic bodies, 336, 

 337 



Arago and Fresnel (MM.), improvements of, in the construction 

 of oil lamps, xi. 381 



Arch, theory and uses of the, iv. 140. Advantages of the elliptic 

 arch illustrated, 141 i 



Arctic expedition, account of tlie, vi. 295-300. On the instru- 

 ments employed in, 351, 352 



