C «*5 3 
A N 
INDEX 
TO THE 
SIXTY-SIXTH VOLUME 
OF THE 
PHILOSOPHICAL TRANSACTIONS. 
A. 
a C 1 D S of fea-falt and of vitriol, experiments to foe how far they contribute to 
^ mineralize metallic and other fubftances, p. 605. See Mineral Subjlances. 
Africa, an account of three journeys into the fouthern parts of, from the Cape Town, 
undertaken for the difeovery of new plants, towards the improvement of the Royal 
botanical gardens at Kew, p. 268. Firit journey, in December 1772, and January 
J? 73 > p. 269 — 276. Second journey, in September, October, November, and De- 
cember, 1773, and January 1774, p. 276 — 301. Third journey, in September, Oc- 
tober, November, December, 17745 P* 3 ot 3 l 7 ' 
Africa, the fouthern part of fome places in it, very fruitful, p. 270. 272. 278—381. 
283. 285. 291. 302. Travelling there laborious and fatiguing, p. 273. 277. 279, 
280, 281. 283. 289. 293. 303, 304. 307. 309. 313. 315, 316. 
Air, concerning its admiffion and ufe in the blood, p. 226 — 238 . Common and nitrous 
air, eafy methods of meafuring the diminution of bulk, taking place upon the mixture 
of; together with experiments on platina, p. 257. Abbe Fontana’s method of mixing 
the nitrous with the common air, difficult in the experiment, p. 258. Inftrument 
contrived to obviate this difficulty, ibid. Defcriptipn of it* p. 258, 259. Manner 
of ufing it, p. 259, 260. Other methods of determining the quantity of air di- 
Many Far,, in Hudfon'. Bay, an account of the fucccf, of feme attetnpta to ft xe 
quick filver there, p. 174. See 2 uhkfl W r. Obfcrvat.un, there on the d.ppt g- 
aecdle, p. i 7 S— lSl * N f Mitrofs, 
