INDEX. 



afcertainlng the capacity of bodies for, 

 29 — Specific, is proportional to capa- 

 city for, 30 — Theory of its adlion on 

 fulphite of pota/h, 96 — Extraordinary 

 infenfibility to, 139 



Hebden, 255 



Heliotropium, Egyptian, phyfica) proper- 

 ties of, 65 — Analyfis of, 66-i-Compo- 

 nent parts of, 68 



Htmp, method of giving the appearance 

 of cotton to, 253 



Herfcheil, Dr. on the tranfit of Mercury 

 over the Sun's difk, and on the defec- 

 tive adlion of mirrors, 8 



Hidrogen, poflibility of its combination 

 with metallic fubftances, 204 



Hoar-froft does not impede telefcopic vi- 

 fjon, 13 



Home's, Mr. obfervations «in the ftruc 

 ture of the tongue, 276 



Mope's, Dr. eudiometric apparatus, 61, 

 210 



Horizon, its vifible dip is influenced by 

 the ftate of the atmofphere, 51 — Caufe 

 of the errors, in nautical obfervations on 

 the, 52 — Remedy, ib. — Method of 

 correfting the errors of the glaffes, 53 



Hornblower, Mr. on mealuring parts of 

 an inch, 247 — On the eye-ftop of re- 

 flefting telefcopes, ib. 



Howard, Mr. 187 — Apparatus for raifing 

 water by atmofpheric preflTure, 216 



Huddart, 57 



Hufeland, 164 



Humours of the eye, experiments on the 

 chemical nature of, 22 



Hutton, 260 



Huygens, 56 



Hydrate of zinc, 81 



Ice, phenomena of its ahforption of heat 

 during liquefaction, 26 



Imagination, the difeafes of, require in- 



veftigation, 163 

 Infenfibility to heat and chemical agents 



faid to be pofleffed by a Spaniard, 



139 



Iron, prefervation of, from ruft, J42 



.1 , caft, effedls of long immcrfion in 



the fea on, 70 



' , native, its origin analogous with 



that of meteoric ftones, 188 



Irvine, Dr. his method of afcertainlng the 

 capacities of bodies for caloric, 29 — In- 

 tended publication of his works, 31 



, Mr. his letter in vindication of 



his father's theory of heat, 25 



Jars, on the method of clofing wide- 

 mouthed, 69 



Jehangire, emperor, his narrative of z 

 metallic ftone that fell in India, jSj 



Juch, 13* 



Kant's tranfcendcntal idealifm, foundation 

 of, 177 



Kino, is not a gum, 232 — Natural htf- 

 tory of, ib. — Mtdicinal ufes of, ib.— 

 Chemical examination of, ib.— Is a 

 fpccies cf tannin, 234 — Reference to 

 Dr. Duncan's account of, ib. 



Kiikpatrick, Col. 188 



Kirwan, Mr. 46 — A miftake in his eflay 

 on vapour reftified, 118 



Klaproth's analyfis of natrolite, 191 



Krucger, 173 



L. 



Lac fulphurls, compofition of, 102 

 La Grange's analyfis of ambergris, 179 

 Lampadius, 62 



Language of the South Americans, copi- 

 oufnefs of, 246 



L^ 



