4 INDEX, 



Aerolites, notices of, xvi. 1S4 



• composition of, xx. 185 



Aerometer, for correcting pneumatic experiments, v. 52-55 

 Affinity (chemical), anomalous case of, i. 81-86 

 Africa, account of the plague in, viii. 183-185 



prospectus of an expedition into, ix. 428-430 



(Western) account of a journey from Egypt to, xiv. 3-14. 



■ (Southern) observations on the climate of, 241-254 

 African expedition, failure of, v. 146, 147 

 Agamous vegetation, observations on, v. 257-264. vi. 20-31. 



210-226 

 Agave, account of a new species of, ii. 86-90 

 Agrarian divisions of the Egyptians, observation on, ii. 187 

 Agriculture (Board of), premiums offered by, vi. 137, 13S 

 when instituted, x. 304. Confers its gold 



medal on Mr. A, Young, 307 



I on the use of oxen in, 218 



prize question in, x. 445 



Ague, new remedy for, xiii. 233 



AiKiN (Arthur, Esq.), evidence of, with remarks, in the cause of 

 Severn and Co., against the Imperial Insurance Company, x. 349 

 Air, effects of on vegetation, ii. 48-50 



— on the weight of, vii. 380 



— on the flotage of small heavy bodies in, and on certain at- 

 mospheric phenomena dependent thereon, viii. 245-258 



— poisonous in the higher mountainous regions of Hindostan, ix.65 



— has weight, xi. 262-264. How to ascertain to what volume 

 of air a certain quantity of water is reduced, 265. Proof that 

 air is rendered heavy by the mixture of some matter heavier 

 than itself, 268. And by the compression of its parts, 269 



— rendered heavier by the separation of its lighter parts, xii. 

 54-56. Thickened by fire, 61-64. Proof that it diminishes in 

 weight, 294-295 



— influence of green fruits on, xiii. 152-154 



— experiments on the vibration of, xvi. 371, 372 



— of marshes bordering upon the sea, notice of the insalubrity 

 of, XX. 401-403 



