43 1 ] 
E. 
Eleftricity , meteorological journal, principally relating to atmofpheric, kept at Knights- 
bridge, p. 185. Defcription of an inftrument for collecting atmofpheric electricity, 
ibid. Remarks on fome phenomena exnibited by a rod on Aug. 31, 1789, p. 211. 
Evaporation , the Caufe of hygrofcopic bodies lofing part of their moifture, p. 2. Expe- 
riments on the maximum of evaporation , and its correfpondence with the maximum 
of moifture in a medium, p. 17. The maximum of evaporation in a mafs of 
inclofed air, far from being identical with the maximum of moifture, p. 20. In a 
ftagnant air every evaporating fubftance has an atmofphere of extreme moifture, 
p.403. 
Excrefcences , obfervations on certain ones of the human body, p. 95, 
Experiments on hygrcmetry, p. 2—42. Experiments on abfolute drynefs, p. 2. On extreme 
moifture, p. 10. On the maximum of evaporation, and its correfpondence with the maxi- 
mum of moifture in a medium, p. 17. On two diftind claftes of hygrofcopes, p. 20. 
On the fcale of the hygrometer between the two fixed points, p. 24. On the compara- 
tive changes of weight and dimenfionsof fome hygrofcopic fubftances, p. 27. On the 
recoil of hygrofcopic threads, p. 39. On the converfion of call into malleable iron, p„ 
173. Conclufions drawn from experiments on iron, p. 175. Experiments relating to 
the decompofition of dephlogifticated and inflammable airs, p. 213. Inflammable ait- 
procured by means of fleam, p. 216. Experiments 011 human calculi, p. 223. 
Experiments and obfervations to inveftigate the compofnion of James’s powder, p. 
317. Experiments on the fenfible properties of James’s powder, ibid. On its fpe- 
cific gravity, p. 318. Experiments on the effedls of fire on this powder, ibid. Ex- 
periment (hewing that antimony, mixed with earthy matter, is ufed in the compofi- 
tion of James’s powder, p. 320. Experiments with different menftrua applied to 
James’s powder, ibid. Experiment fhewing the proportion in which James’s pow- 
der diflolves in water, p. 324. Experiment with marine acid applied to James’s 
powder, which had not been expofed to the aClion of nitrous acid, or any other 
menftruum, p. 344. Experiments on James’s powder with fixed alkalies, p„ 343, 
Synthetic experiments on James’s powder, ibid. Experiments on the Pulvis anti- 
monialis, p. 349. Various experiments on antimonial calces, p. 351. Chemical 
experiments on Tabafheer, p. 368. Experiments on Tabafheer, treated with water, 
p.370. With vegetable colours, p. 371. At the fire, ibid. With acids, p. 3 7 3 * 
With liquid alkalies, p. 375. With dry alkalies, p. 379. With other fluxes, p. 
380. Table of experiments on comparative changes in the weight and the length 
of the fame fubftance by increaftng moifture, p. 41 1*. 
F. 
Feldfpath , a fubftance common both to bafaltes and granite? p. 54* 
Fever powders > receipts for making, p. 346, 347 0 , 
