[ 497 3 
; C. 
‘CalderwooJ, Col. See Safe. 
Caribbee ljlands, reafons for fnppofing a communication Between the burning mountains 
in them and the volcanos on the high mountains in America, p. 30. Shocks of 
earthquakes frequent near them, ibid. 
Cwvendjh , Henry, Efq. See Air-. 
Combuftion , Obfervations and Experiments on the Light of Bodies in a State of, by the 
Rev. Mr. Morgan, p. 190. Data to be attended to, ibid. Conclufion drawn from 
them, ibid. Manner in which the rays of light efcape, when decompofed by heat, 
p. 191. Obfervations on the flame of a candle, p. 192. The belt mode of fhevving the 
efcape of fome rays by that degree of heat which will not feparate others till increafed, 
p. 193. Mr. Melvill’s mode of examining bodies whilft on fire, ibid. Befides the 
increafe or decreafe of heat, there are other modes of retarding or accelerating the 
combuftion of bodies^ p. 194. Singularities in the colours of different flames ac- 
counted for, p. 195. Singular phenomenon attending a burning body explained, 
p. 196. Imperfection in Sir Ifaac Newton’s definition of flame, p. 197. Experi- 
ments on eleCtric light, p. 198 — 206. General deductions ufeful in procuring any 
•degree of certainty in any hypothefis, p. 198. Obfervations on pliofphoric light, p„ 
208. Mr. Wilfon’s theory of the flow combuftion of fhells, ibid. Objections to 
that theory, p. 209 — 211. Poftfcriptby Dr. Price, p. 21 r. 
Confirudlion of the Heavens, on the, by William Herfchel, Efq. p. 213. Two oppofrte 
extremes to be avoided, if we hope to make any progrefs in an inveftigation of this 
delicate nature, ibid. Theoretical view of the univerfe, p. 214. Formation of 
nebulae, ibid. Objections confidered, p. 216. Optical appearances confldered, p. 
217— >219. Refult of obfervations, p. 219. The t’ etical view of the univerfe, 
p.214. Shewn to be perfectly confident with faCts, o. I. Table of ftar-gages, 
p. 221 — 240. Problem, the ftars being fuppofed to be nearly fcattered, and their 
number, in a field of view of a known angular diameter being given, to determine 
the length of the vifual ray, p. 241. The fame otherwife, p. 243. We inhabit the 
planet of a ftar belonging to a compound nebula of the third form, p. 244. Difference 
between a crowd and a duller of ftars, p. 246. Ufe of the gages, p. 230. Table 
II. p. 252. Section of our fidereal fyftem, p. 253. The origin of nebulous ftrata, 
p.254. An opening in the heavens defcribed, p. 2 36. Phaenomena at the poles of 
our nebula, p. 237. Enumeration of very compound nebuke or milky ways, p. 258. 
Some very remarkable nebulae pointed out, ibid. Several extended nebulae defcribed, 
p. 260 — 262. A perforated nebula or ring of ftars, p, 263. Planetary nebulae, p. 
263—266. 
Vol. LXXV. 
UD8 
D. D’Alembert' 
