494 



Index. 



Diamond, combustion of, 11. 

 Diffused gold particles, 413. 

 Disinfecting liquid, Labarraque's, 222. 

 Education, mental, 463. 

 Elasticity of the condensed gases, 122. 

 Electric force and conservation of force, 



456. 

 Escape of gases confined by mercury, 



Ether, nature of the, 368. 

 Euchlorine, liquefied, 92, 110. 



, solidified, 110. 



Expansion affects decomposition, 219. 

 Experimental relations of gold to light, 



391. 



Figures, acoustical, 314. 

 Films of gold, 395, 405. 



produced by phosphorus, 405. 



their character, 406. 



thinned, 407. 



heated, 408. 



pressed, 408. 



in the microscope, 408. 

 Films of metals by phosphorus, 409. 

 Flame, sound of, in tubes, 21. 

 Fluid chlorine, 85, 95, 129. 

 Fluidity of sulphur at common tempe- 

 ratures, 212. 



Fluosilicon, liquefied, 104. 

 Force, its conservation, 443, 460. 

 Force, lines of, 369. 

 Forces of matter, 369. 

 Forms of fluids on vibrating surfaces, 



335. 



Freezing process, 374. 

 Freezing water, its conditions, 372. 



, exclusion of extraneous matter, 



373. 



Furnaces for glass making, 246, 284. 

 Gas-lamp, portable, 134, 167. 

 Gas, transference of heat by, 221 . 

 Gases through capillary tubes, 5, 6. 



over mercury, 217. 



liquefied, 89, 96. 



solidified, 96. 



, non-condensable as yet, 116. 



Gauges for condensation, 91, 98. 

 Glass for optical purposes, 231. 



, its colour affected by light, 142. 



, ruby, 428. 



tubes, their strength, 98. 



Gold, its relations to light, 391. 



, polarized light, 435. 



Gold, its transparency, 395, 401. 



, effect of pressure, 397, 403, 404, 



408. 

 Gold-leaf, 393. 



, attenuated, 394. 



, effect of heat, 395. 



, effect of pressure, 397. 



Gold divided by deflagration, 401. 



Gold deflagrations, 401. 



their metallic character, 428. 



and polarized light, 438. 



Gold films by phosphorus, 405. 



, their metallic character, 429. 



, and polarized light, 439. 



Gold in diffused particles, 411. 



, ruby fluid, 411. 



, amethystine fluid, 413. 



, blue fluid, 417, 420. 



, state of the gold tested, 413. 



, spontaneous change, 414, 416. 



, examined by light, 415, 416, 417. 



, heated, 418. 



, changed by saline matter, 419. 



-, its metallic character, 430. 



, degree of division, 423. 



, quantity present, 423. 



, separated from water, dried, 425. 



, by various substances, 425. 



Gold, size of its particles, 416. 



Gold fluids, examined by coloured rays 



of light, 442. 



, and polarized light, 439. 



Gold ruby fluid, 411, 418, 420. 

 , changed by salts, 419. 



, its metallic character, 430. 



Gold, blue fluid, 417, 420. 



Gold, violet fluid, 420. 



Gold reduced'by phosphorus, 405, 411,. 



various substances, 425. 



organic tissues, 427, 432. 



heat, 427. 



Gold particles polarize light, 441. 

 Gravitation force, considered, 446, 462. 



, its definition insufficient, 446. 



, time?, 371. 



Gravity, its definition inconsistent with 



the conservation of force, 446, 449, 463. 

 , Newton's opinion of its nature, 



451. 



Gunpowder, its action on lead, 142. 

 Heat, its effect on gold, 395, 403, 408. 



, its effect on silver, 398. 



produces sounds amongst metals, 



311. 

 Heat force and conservation of force, 



453. 

 Heavy glass, materials, 241. 



, composition, 275. 



, manufacture of, 231. 



, furnaces, 246, 284. 



, use of platinum powder, 270, 290. 



, stirring of it, 266, 271. 



, bubbles, 269. 



, effect of continued heat, 265. 



, annealing, 272. 



, general qualities, 275. 



, changeability, 279. 



, refractive and dispersive power, 



275. 



