INDEX. O 



Air-gun, notice of tlie first discovery of, xi. 271, note, 



experiments on the light produced by the discharge 



of, XV. 64-CG 



Air-pump, successful application of, to the impregnation of sub- 

 stances with fluids, xii. 108 



Albbrtus (Magnus), notice of, ix. 299 



Albumen, influence of water on, xiii. 410 



Alburnum, of spring and winter felled trees, different qualities of, 

 x.395 



Alchemy, sketch of the history of, ix. 225-239 



Alcohol, average quantity of, in different kinds of wine, table of, 

 V. 152-154 



obtained from potatoe apples, vi. 157. 



on the formation of in fruits, vii. 385 



formation of, by fluoboric gas, xi. 394, 395 



effect of voltaic electricity on, xiy. 232 



■ its combination with volatile oils, xiv. 4'27. Concen- 



tration of by bladders, xviii. 180 



action of lime on, xx. 180-181. Rectification of, at 



common temperatures, 400 



Ale, experiments on the strength of, v. 124 



Alexandria, observations on the inscription on the column at, x. 

 1-7. Fac-simile of it, 8 



Algae, observations on the formation and fructification of, vi. 

 211-218 



Algebraical and fluxional notation, remarks on the principles of, 

 XX. 321-325 



Algol, table of the recurrence of the smallest light of, xvii. 184, 

 185. 



Ali Bey, abstract of the travels of, i. 264. The reality of this 

 traveller asserted, ibid. 265. Notice of the different hypo- 

 theses respecting the course of the Niger, 265-267. Evidence 

 collected by Ali Bey, for the existence of a Mediterranean sea 

 in the middle of Africa, in which the Niger terminates, 267« 

 272. Account of his crossing the Great Desert, 273-275 



Alisma Plantago useful in hydrophobia, vi. 165, 166 



Alison (Dr.), observations on the theory, which ascribes sensa-» 



