Index. 



495 



Heavy glass, colour, 276. 



, reflexion by, 277. 



, hardness, 278. 



, fusibility, 279. 



, its electric condition, 282. 



Historical statements, liquefaction of 

 gases, 124, 135. 



Holding the breath, 358. 



Hydrate of chlorine, 81. 



Hydriodic acid, liquefied, 103. 



, solidified, 103. 



Hydriodide of carbon, 51, 81. 



Hydrobromic acid, liquefied, 104. 

 , solidified, 104. / 



Hydrocarbons, new, 154. 



decomposed mechanically, 219. 



and sulphuric acid, 160, 170. 



Hydrochloric acid, liquefied, 95, 106, 131. 



Hydrogen and carbon, new compounds 

 of, 154. 



and chloride of silver, 31. 



Ice, very pure, 373. 



, exclusion of extraneous matter, 373. 



, cohesion of, 380. 



, its mutual adhesion, 373. 



, adhesion of other bodies to it, 374. 



, of irregular fusibility, 374. 



, and ice-cold water, 381. 



Iron, meteoric, 61. 



aUoys, 80. 



deflagrations, 404. 



, and polarized light, 441. 



Jelly and ruby gold, 433. 



Labarraque's liquid, 222. 



Lamps, ventilation of, 362. 



Lead in shrapnell shells, changed, 141. 



, its action on gunpowder, 142. 



deflagration, 404. 



, and polarized light, 440. 



Light affects purple tint of plate-glass, 

 142. 



, its transverse vibrations, 357. 



, relation of metals to, 391, 435. 



, and gold films, 406. 



, and metallic deflagrations, 404. 



, and gold fluids, 415. 



Lighthouse lamp, ventilation, 362. 



Lime, native caustic, 2. 



Limit to vaporization, 199, 205. 



Lines of force, 369. 



Liquefaction of gases, 89, 96. 



, historical statements, 124, 135. 



Low temperatures for condensation, 100. 



Lungs, preparation of, 358. 



Lycopodium heaps, motion of, 332. 



Manufacture of heavy glass, 231. 



Matter, its nature, 367. 



Mental education, 463. 



Mercury vapour at common tempera- 

 tures, 57. 



cannot confine gases, 217. 



Metallic character of divided gold, 428. 



Metallic deflagrations and light, 401, 404, 

 438. 



Metallic films by phosphorus, 409. 



hydrogen, 410. 



Metals, their relations to light, 391, 435. 



, and polarized light, 401, 435. 



, particles in planes, polarize light, 



441. 



Meteoric iron, 61. 



Motion of particles under vibration, 332. 



Musket balls in shrapnell shells, 141. 



Naphthaline and sulphuric acid, 182. 



Native caustic lime, 2. 



New carburet of hydrogen, 163. 



Newton's opinion of the nature of gra- 

 vity, 451. 



Nitrogen, test for minute portions of, 143. 



Nitrous oxide, liquefied, 93, 111, 117. 



, solidified, 111, 117, 



, pressure, 112, 117. 



Nitrous acid, solidified, 115. 



Nuclei of matter, 369. 



Observations on mental education, 463. 



Oil-gas, 168. 



, liquefied, 133. 



-, fluids and hydrocarbons, 155. 



Olefiant gas, its mixed nature, 119. 



, liquefied, 102, 118. 



, liquid, its pressure, 103, 120. 



Optical deceptions, peculiar, 291, 309. 

 Optical glass, 231. 



, faults of, 235. 



Organic tissue stained by gold, 427, 432. 

 Oxide of silver in ammonia, 14. 

 Oxygen, attempts to liquefy it, 122. 

 Palladium deflagrations, 405. 



film, 409. 



and polarized light, 440. 



Particles on vibrating surfaces, 314, 332. 

 Passage of gases through tubes, 5, 6. 

 Peculiar acoustical figures, 314. 



class of optical deceptions, 291, 309. 

 Perchloride of carbon, 35. 

 Perspective, aerial, 215. 

 Phosphuretted hydrogen, liquefied, 105. 

 Platinum in steel, 66, 71. 



film, 409. 



deflagrations, 405. 



and polarized light, 440. 

 Ponderability of matter, 368. 

 Polarized light and metals, 401, 435. 



gold films, 401, 435. 



Portable gas-lamp, 167. 

 Preparation of the lungs, 358. 

 Preservation of rare fluids, 152. 

 Pressure, its effect on gold, 397, 403 



408. 



, its effect on silver, 399. 



Protochloride of carbon, 46. 



Purple tint of plate glass and light, 142. 



