[ 44 + ] 
generate volatile alkali, p. 381. The combination of the phlogifticated and inflam- 
mable airs, and the formation of volatile alkali, depend chiefly, if not altogether, 
on the approximation of the parts of inflammable air, when phlogifticated air is pre- 
fented to them, p. 3.82. Nitrous air mixed with hepatic air will form volatile alkali, 
p.384. 
Airs, on the affinities c.f the phlogifticated and light inflammable, p. 379. See Air . 
Albany Fort, account of experiments made there, p. 166. 
Alkali, mineral , its effect on the freezing point of water, p. 308. Volatile Alkali , its 
effeft on the fame, p.309. On the formation of volatile alkali, p. 379. When 
iron, water, and l'ulphur, aft upon each other in atmolpheric air, volatile alkali is 
forpned, p. 384. Volatile alkali formed by mixing nitrous air with hepatic air. p.384.. 
America , South, account of fome native iron found there, p. 37, 183. 
Aabs and other Mahometan nations reckon their time by the lunar year, p. 414. 
Atmofpbere , correfpondence of the heat of the, with the height of the barometer, p. 48. 
Attraction of iife, p. 29. Its caufe can never be inveftigated, p. 33. Study of the 
laws of the attraction of life, or what has been called mufcular motion, of confiderable 
importance, ibid. 
A aft in, William, M. D. on the formation of volatile alkali, and on the affinities of the 
phlogifticated and light inflammable airs, p. 379. 
Authorities cited in Mr. Marfden’s account of the era of the Mahometans, p. 423 — 4 28* 
v 
B. 
Eaiilie, Matthew, M. D. on the tranfpofition of the Vifcera, p. 350.. 
Barbery , experiment on the, p. 138. 
Barker, Thomas, Efq. Abftraft of a regifter of the barometer, thermometer, and 
rain at Lyndon in Rutland ; with the rain at Selbourn and Fyfield in Hampffiire, and 
at South Lambeth in Surrey. A'fo fome account of the annual growth of trees, p. 408. 
Barometer , ftate of it at London throughout the year 1 787, p. 192 — 216. Abftraft of a 
regifter of the barometer, thermometer, and rain at Lyndon in Rutland, in 1787, 
p. 408. 
Blagdeu , Charles, M. D. on the cooling of water below its freezing point, p. 125. On 
the effeft of various fubftances in lowering the point of congelation in water, p. 277. 
Borax, the effeft of, on the freezing point of water, p. 293, 
C. 
Caflus Tuna, a kind of Indian fig, an irritable vegetable, p. 161, 
Ga<vatto Tiberius, Obfervations on fmall quantities of eleftricity, p. 1. On the tempera- 
ment of thofe mufical inftruments in which the tones, keys, or frets are fixed, p. 238, 
Defcription 
