828 Index. 



Fire, management of ii, 500. 



Essay on (with plates) iii, 1-165. 



necessity of being able to regulate iii, 34. 



Fire-balls ii, 347,352. 



Fire-place doors iii, 25. 



for kitchen boiler iii, 379. 



Fire-places, chimney, Essay on (with plates) . . . ii, 484-570. 



dosed iii, 34, 193, 489-504. 



cottage iii, 151. 



kitchen, attempts to improve iii, 193, 230. 



imperfections of iii, 192, 227. 



proper materials for ii, 503. 



Fire-places and boilers, experiments on various . . iii, 63-119. 



Fixed air, use of, in blow-pipe iii, 59. 



Flame, attempt to shoot, instead of bullets i, 96. 



a non-conductor of heat iii, 55. 



transparent to light iv, 39, 226. 



Flannel, use of, for clothing i, 235. 



Fluidity, nature of i, 275. 



the life of inanimate nature ........ i, 363. 



Fluids, propagation of heat in i, 237-400. 



Fluoric (hydrofluoric) acid for etching glass iv, 180. 



Food, Essay on iv, 395-490. 



for cattle, advantage of cooking iv, 405. 



Force of fired gunpowder i, 98-172. 



Fordyce, experiments on weight acquired by water on 



freezing ii, 2. 



Friction, source of heat excited by (plates) i, 469-493 ; ii, 210-221. 



Frigate, proposed plan for (with plates) iv, 680-691. 



Frigorific power defined ii, 426. 



rays emitted from cold bodies ii, 63-130. 



more emitted by ice than by metallic surfaces ii, 66. 



reality of ii, 70. 



Fuel, economy of iii, 1-165, 5 02 - 



waste of ii, 542 ; iii, 174-190,502. 



estimated amount of iii, 6, ii. 



Fulminating gold, explosive force of i, 89. 



Fundamental principles of establishments for the poor iv, 327-393. 



Fur, warmth of i, 463 ; ii, 128 ; iii, 46. 



Furnaces, portable iii, 401-419, 453. 



