4" INDEX. 



Air diminifhed by a mixture of iron filings and brimftone, 



p. 207, 208. Very noxious to animals, p. 209. 

 Air infected with refpiration, p. 181. Unfuccefsful trials 

 to reftore it, p. 183, 184, &c. Is the fame with air 

 tainted with animal putrefaction^ p. 186, 187. Differ- 

 ent from, though analogous to, fixed air, p. 188, 189. 

 Not fatal to feveral infects, p. 192. Cured by vegeta- 

 tion, p. 193, &c. j and probably by a mixture of fixed 

 air, p. 204. 



Air in Ireland, and like wife in England, obferved to be 

 in a conftant date of pofitive electricity, during winter, 

 p. 138. Probably by the effect of cold, p. 139. 

 Air tainted with the fumes of charcoal, p. 225. Ex- 

 tinguifhes flame, and deftroys animals, p. 227. 



Air vitiated by flame, p. 162. How much diminifhed 

 by it, p. 163. Not altered in its fpecific gravity s 

 p. 164. Not fatal to animals, p. 165. Whether 

 reftored by cold, ibid. Is fo by vegetation, p. 166, 

 167, &c* 



Angular diflance between two near land objects ; how ob- 

 ferved by Hadley's quadrant, p. 1 19, 120. 



Animal living, not diffolved in the Itomach of another 

 animal, p. 449. 



Antipodes our, may have a contrary electricity in the air v 

 p. 189. 



Antium, famous for its worfhip of the goddefs Fortune, 

 p. 6^ 



Arijlotle, the author of the opinion about the cuckows 

 having no neit of their own, p. 322. Did not write 

 from his own obfervations, p. 323. 



Afcenfion^ the point of the longefl: in the ecliptic, founds 

 p. 438. 



Ajlroncmical obfervations at Portfmouth, p.. 36, &c. 



Agronomical problems folved by Dr. Pemberton, p. 434. 



Atmofpbere injured by the refpiration of animals and 

 putrefaction ; probably reftored by vegetation, p. 198, 



Jimofp.berical electricity. See Ab\ Fog$ x Eleclrictty. 



7 BabelmarrdH 



