452 INDEX. 



Glass, chemical composition, Gold, ii. 99 



ii. 91 manufacture of, ii. Gravity, i. 14 specific, i. 117 



235 Grottoes, artificial, ii. 330 



Glauber's salts, ii. 83 Gum, iu 126 



Glucine, ii. 93 Gunpowder, composition of, 82 



Glue, ii. 292 Gypsum, ii. 88 



Glutin, ii. 128148 



H. 



Hair-rope machine, i. 195 Hydrometer, i. 120 



Harmony of sound, i. 228 Hydrostatics, i. 106 



Hops, ii. 157 > Hydrostatic balance, i. 118 



Hydraulics, i. 176 Hydrostatic bellows, i. Ill 



Hydrocarbonate gas, Ji. 59 Hydrostatic paradox, i. 109 



Hydrocyanic acid, ii. 74 Hygrometer, 15 i. 2 

 H}'drogen, ii. 49 an acidifying 

 principle, 54 



L 



Japanning, ii. 248 Ink, Indian, ii. 346 



Impenetrability of matter, i. 2 Iodine, ii. 66 



Inclined plane, i. 43 Invisible girl, i.230 



Ink, method of making, ii. 306 Iridium, ii. 121 



, sympathetic, ii. 308 Iron, ii. 104 ores of, 106 



K.' 

 Kelp, ii, 213235 



*, ' - fffc- L - 



Lac, ii. 129 Lens, i. 236 burning, i. 240 

 Lacquering, ii. 258 focal distances of, 243 



Landscapes, drawing of, ii. 400 Lime, ii. 87 



Lead, ii. Ill Linen, bleaching of, ii. 160 



Leather, nature of, ii. 201 Lithia, ii. 84 



tanning of, ii. 202 Lithography, ii. 445 



Lever, i. 24 Lixiviation, ii. 8 



Light, velocity of, i. 232 Loadstone, ii. 105 



refraction of, 234 con- Lute, used in chemical ope- 

 sidered chemically, ii. 33 rations, ii. 9. 304 



N. 



Narcotic principle, ii. 132 Nitrate of potash or nitre, ii. 



Nickel, ii. 117 81 



Nitrates, ii. 46 Nitric acid, ii. 45 



