Index. 84 1 



Velocities of integrant particles of fluids i, 360. 



Ventilation of warm rooms ii, 488. 



Verona, kitchens in hospitals at, iii, 125, 126, 213 (plate) ; iv, 324. 



poor of iv, 325. 



Viscosity, effect of, on propagation of heat in liquids . . ii, 287. 



of water . ^286,298,315. 



Vision, circumstances favourable to distinct . . . . .iv, 104. 



Vital principle, conjectures respecting the i, 363. 



Voluntary subscriptions for the relief of the poor . . iv, 518-523. 



WARM bathing, salubrity of iv, 583-613. 



rooms, salubrity of iv, 567-581. 



Warmth of substances used for clothing . . . . i, 442 ; ii, 201. 

 depends on polish of surface ii, 97, 128. 



Waste of fuel ii, 542 ; iii, 174-190, 502. 



Water, adhesion of particles of, to each other . . . ii, 290-317. 



amount attracted from the air by various woods . . ii, 455. 

 contained in seerwoods ii, 452. 



a non-conductor of heat. (See Propagation of heat in fluids?) 



apparent increase of weight on freezing ii, 2. 



expands on freezing i, 284,310. 



heat developed in condensation of vapour of ... ii, 417. 



in economy of nature . . . . i, 263, 313-333 ; ii, 308. 



in food, part played by iv, 400. 



lack of perfect fluidity of .... ii, 286, 298, 302, 315. 



loss of heat when freezing ii, 15. 



on hot surfaces i, 381 ; ii, 100. 



production of air from i, 191-231. 



specific quantity of latent heat in ii, 16. 



temperature of, at its maximum density . . . ii, 258-273. 



Wax and tallow candles compared iv, 200. 



heat developed in combustion of ii, 380. 



Weight ascribed to heat ii, 1-22, 209. 



Wheels, broad felloes for iv, 661-678. 



Wicks, best form of iv, 153, 164. 



preparation of iv, 160. 



Windows, double, utility of iii, 46 ; iv, 790. 



use of ground glass in iv, 176. 



Winds, conjectures respecting the proximate causes of . . i, 394. 

 service of, in economy of nature i, 464. 



