
[ 508 j ae 
gifticated air, p. 148. Manner in which Mr. Cavendith would explain molt oF the ‘, 
phenomena of nature, on Mr. Lavoifier’s principle of entirely difcarding Loic anate : 
&c. p. 150° Tes 
' Air, Remaiks on Mr, Cavendifh’s experiments on air, in a letter from Richard Kirwan, 
Efq. p. 154. Experiments felcfed from Dr. Prieftley, to prove that fixed air is fome- 
how or other produced in phlogiftic proceffes, either by feparation or compofition, 
ibid. Of the calcination of metals, p. 155—-161. Of the decompofition of nitrous 
air by mixture with common air, p. 161—164. Of the diminution of common air 
by the ele€tric fpark, p. 164. Of the diminution of common air by the amalgama- 
tion of mercury and lead, p. 165. Of the diminution of refpirable air by come 
buftion, p. 166—169. 
— Anfwer to Mr. Kirwan’s Remarks upon the Experiments on Air, by Henry 
Cavendifh, Efq. p. 170. Refult of an experiment of Mr. de Laffone’s, made with 
the ilings of zinc, digefted in a cauftic fixed allsali, ibid. Remarks thereon, p. 
171. See Metals, Experiments to determine if fixed air is generated by a mixture 
of nitrous and common air, p. 172, 173- Curious experiment of Mr. Kirwan’s, p. 
174. Obfervation on an experiment of Dr. Pri: ftley’s with a mixture of red precipi- 
tate and iron filings, ibid. "The argument on this fubdject fummed up, p. 175. The 
generation of fixed air not the general effect of phlogilticating air, p. 177. 
-— Reply to Mr. Cavendifh’s Anfwer, by Richard Kirwan, Efq. p. 178. Anfwer to Mr. 
Cavendifh’s remarks on Mr. Laffone’s experiment with filings of zinc digefted in acauttie 
fixed alkali, ibid. Ditto to his obfervations on the calcination of lead, ibid. Extraét of 
Dr. Priettley’s letter, concerning the black powder which he formed out of an amalgam 
of mercury and lead, p. 179. Fixed air, produced by the diftillation of red precipi- 
tate and the filings of iron, canner be attributed to the decompofition of the plum- 
bago contained in the iron, ibid. Mr. Cavendifh’s experiment of the nitrous fele- 
nite’s abforbing fixed air, juft, and agreeable to Mr. Kirwan’s, p. 180. The perma- 
nence of a mixture of nitrous and common air, made over mercury, not to beattri- . 
buted to common vapour, ibid. 
—— Thoughts on the conftituent Parts of Water and of dephlogifticated Air, with 
~ an Account of fome Experiments on that Subject, in a letter from Mr. James Watt, 
Engineer, p. 329+ The author’s reafons for delaying the publication of his fenti- 
ments on this fubje&, p. 330. Obfervartions on the conftituent parts of inflammable 
air, ibid. Effects of mixing together certain proportions of pure dry dephlogifti- 
cated air and of pure dry inflammable air, in a ftrong glafs veffel, clofely thut, fet on 
fire by the electric fpark, p. 331, 332- See Cavendi/>, Humor, or dephlogifticated . 
water, has a more powerful attra¢tion for phlogifton than it has for latent heat, but : 
cannot unite with it, at leaft not to the point of faturation, or to the total expulfion j 
of the heat, unlefs firft made red-hot, or nearly fo, p. 334. A mixture of dephlo- ee 
gifticated and inflammable air will remain for years in clofe veffels, in the common wi 
heat of the atmofphere, without any change, and be as capable of deflagration as 
Pp ; y Ss P g 
when 

