INDEX. 



Ither, table of Its colorific undulation, 



169 

 Ethereal medium, attraction of bodies for 



the, 85 

 Euler, 79, 86 



F. 



Fabroni, 302 



Falconer, Rev. Tho. his geography of 

 Strabo, 224 



Finery cinder, 234 



Fire, Thomfon on, 98 



Fiih, luminous, 34 



Fletcher, J. Efq, on Atkins's hydrome- 

 ter, 276 



Fluor fpar, its phofphorefcence explained, 



99 



Fourcroy, 197 



Fowler, 299 



French and Englilh paper, their relative 



qualities, &c. 7 

 Froft, its ufe in the cryftalli jation of falts, 



119 

 Fuftet, 2,02 

 JFuftic, 201 



Gallic acid, 199 



Galvani, his work, 297 



Galvanifm, hiftory of, by Dr. Boftock, 

 296 



Gafeous oxiee of carbon, its fpecific gra- 

 vity, 43. — Its production from metallic 

 calces, 44 



Gaufs, 51, 59 



Glauber's fait, method of obtaining it, 

 118. — Its ufe in the preparation of foda, 



243 



Glow-worm, experiment on its light, 33 



Glue, account of the art of making, by 

 Mr. J. Clennel, 235. — Its characters 

 when good, 236 



Goodwyn, Mr. his hydraulic engine im- 

 proved, 2 



G,pugh, Mr. John, on ventriloquifm, 

 122— Anfwcr $0 Jjis eflay on the the- 



ory of compound founds, by Dr. Tho- 



Young, 264, 267 

 Graham, Dr. 139 



Grains of Avignon, their qualities, 202 

 La Grange, 210, 265 

 Granite, account of, by Mr. R. Jamefon, 



225 

 Gregory, Mr. Qlinthus, his treatife on 



aftronomy, 64. — Obfervations on Mr. 



Pearfon's analogy for deducing the 



greateft equation, 1 65 

 Gren, 239 

 Greville, Rt. Hon. Charles, 258 His, 



fpecimen of anhydrous fulphate of lime, 



191 

 Gulllot, Cit. Merat, his reflections npon 



the art of tanning, 70 



Guyton, Cit. his ftove, 24 



H. 



Hall, Sir James, 230 



Halley, Dr. 49 



Hatchett, Charles, Efq. his analyfis of a 



mineral fubftance from North America, 



129, 176 

 Hah"y, T74, 197 

 Hearing, phenomena of oblique, explained, 



124 

 Henry, Mr. 185, 186, 304 

 Herfchel, Dr. 164; — His obfervations on 



the new planets, 221 

 Hidrogen, carbonated, obfervations on its 



expanfion by electricity, 184 

 Hidrogen gas, fulpburated, its effects on 



fpontaneous light, 10 1 

 Higgins, Dr. 107 

 Hifkerdeau, 188 



Hooke, 10, 169. — His explanation of in- 

 flection, 172 

 Hornblower, Mr. J. C. his obfervations 



on the beams of fteam engines, 68 

 Howard, Edward, Efq. his experiments 



on ftony and metalline fubftances fup- 



pofed to have fallen on the earth, 216, 



Hulme, Dr. Nath. on fpontaneous light, 

 31, 100 



b 2 Humbold, 



