824 Index. 



Chemical affinity, conjectures respecting i, 346. 



combination accompanied by heat ii, 408. 



properties as influencing power of confining heat i, 452. 



properties attributed to light iv, 75-97. 



Chimney fire-places, Essay on (with plates) . . . . ii, 484-558,, 

 supplementary observations con- 

 cerning ii, 559-57- 



Chimneys, smoking, causes of ii, 485, 537. 



cure of ii, 486. 



Chinese cooking utensils iii, 418. 



lanterns, theory of iv, 174. 



Cleanliness, importance of iv, 259. 



Closed fire-places iii, 34~4 2 , I 9 2 > 4 8 9-54- 



Clothing, conducting power of substances used for . i, 442-451. 

 warmth of, depends on polish of surface . ii, 97, 128. 



substances used for ii, 201. 



Coffee, art of making iv, 623-651, 656. 



effect of iv, 618,651. 



Essay on iv, 615-660. 



preservation of, when ground iv, 622. 



when made iv, 659. 



roasting of iv, 619. 



Coffee pots and urns (with plates) iv, 639-651, 656. 



Cold, no absolute ii, 104. 



Colour, dependent on frequency of vibrations ii, 125. 



Coloured shadows explained iv, 49-62. 



Colours, harmony of iv, 63-71. 



Combined heat ii, 497 ; iii) 39- 



Combustion of charcoal at low temperatures ii, 365. 



of iron in oxygen i, 382. 



source of light in i, 201 ; iv, 207-228. 



Communication of heat, mode of ii, 22-130. 



Condensation of liquids on cooling i, S^- 

 vapours, heat developed in . . . ii, 417-424. 



Conducting power of moist air i, 4 2 5- 



rarefied air i, 43- 



Torricellian vacuum . i, 405-424 ; ii, 193 ; 



iii, 50. 



various substances, i, 434-468 ; ii, 198-207 ; 



"i, 43-55- 



