Index. 829 



Galvanic influence iii, 350. 



Gay-Lussac and Thenard, analysis of wood ii, 465. 



Glaciers of Cliamouny, phenomenon observed on . . ii, 251-257. 



Glass, ground, not opaque iv, 108. 



usefulness for windows iv, 176. 



resistance of, to light iv, 27. 



Glazing of earthenware iii, 340, 345. 



Gold, reduced by charcoal iv, 82. 



essential oils iv, 90. 



heat iv, 78. 



light i, 380, 382 ; iv, 80. 



Grates, various ii, 519 ; iii, 35, 129, 462. 



Ground glass, usefulness for windows iv, 176. 



Gunpowder, account of experiments upon i, 1-97. 



attempts to increase force of (with plates) . . i, 92. 

 force of fired ... i, 98-172 (with plates) j ii, 189. 



Lavoisier's theory of i, 109. 



Robins's theory of . . . . i, 108,109, 



manner of inflammation . . , . i, 376. 



method of proving . . . . . . . . . . i, 67. 



source of heat in combustion of ii, 189. 



specific gravity of . i, 91. 



theories of mode of combustion of . . . . . i, 43. 



Harmony of colours iv, 63-71. 



Hasty pudding, cost of ... . . . . iv, 454. 



manner of eating . .iv, 451. 



preparation of iv, 450. 



Heat accompanies chemical change ii, 408. 



acquired by guns upon being fired i, 31-39. 



effect of, on force of powder . . . i, 28. 



action of, in reducing gold iv, 76. 



a mode of motion . i, 490; ii, 104, 114, 124, 170-184, 214. 



combined ii, 497 ; iii, 39. 



capacity of various liquids for ii, 425-434. 



compared to light ii, 109. 



sound ... ii, 104, 114, 124, 179, 214, 222. 



developed in combustion ii, 370-417. 



of alcohol ii, 387. 



charcoal ii, 403. 



