408 



CATALOGUE. — HEAT, CAPACITIES. 



Capacity for Heat. 



See Natural History. 

 Compression. See Sources of Heat. 

 •fDesaguliers's experiments on quicksilver 

 and water. Ph. tr. 1720. 81. 



Makes the quicksilver contain most heat in the same 

 b«.ilk. 

 Richmann on the heat of mixtures. N. C. 



Petr. 1. 152, lG8, 174. 

 Hichmann on the heat of quicksilver. N. C. 



Petr. HI. 309. 

 Richmann on the cooling of bodies. N. C. 



Petr. IV. 241. 

 Braun on the phenomena of heat. N. C. 



Petr. X. 309. 

 Musschenbroek's table of the time of heat- 

 ing. Introd. II. 678. 

 Baume on col3 from evaporation. S. E. V. 



405, 425. 

 *B!ack's experiments on heat. 



Ace. Roz. Intr. II. 428. 

 Irvine's essays. 

 Lavoisier and Laplace on a new mode of 



measuring heat. A. P. 1780. 355. H. 3. 



By the melting of ice. 



Cavendish. Ph. tr. 1783. 312. 



Says, that heat is " generated" in freezing, and " dis- 

 appears" in thawing. 



*Wedgwood on the calorimeter. Ph. tr. 



1784.371. 

 *Crawford on animal heat and combustion. 



8. Lond. 2ed. 1788. 

 Wilke on specific heat. Roz. XXVI. 256, 



381. 



The capacity of water being i, that of an equal weight 

 of agate is .195, glass .187, iron .126, brass .116, copper 

 ,114, zinc 102, silver .082, .antimony .063, tin .06, gold 

 .05, bismuth .043, lead .042. But for equal volumes, the 

 proportions are, copper 1.027, water 1, iron .993, brass 

 .971, gold .966, ver .833, agate .517, lead .487, glass 

 .448. 



Carette Soyer on the heat excited by lime. 

 Roz. XXIX. tm. 



Kirwan's table in Magellan's essay on fire. 

 Berlinghieri esame della teoria di Crawford. 

 4. Pisa, 1787. 



Espr. des Journ. Mars. 1790. 

 Gren on Crawford. Journ I. 

 Morgan on Crawford. 

 Seguin. Ann. Ch. lit. 148. V. J9I. 

 Table of specific lieats. Cavallo. N. Ph. HI, 

 70. 



From Crawford, Kirwan, and Lavoisier. Specimens. 



Water l.ooo Nitrous acid L. .661 



Oxygen C. 4.749 K. .844 



K. 37. Spermaceti oil C. .500 



Atmospheric air C. 1.700 K. .399 



K. 18.6/0 Iron C. .127 



Aqueous vapour C. 1.790 K. .125 



* Pictet (8.5) L. .101 



Carbonic acid C. 1.045 Mercury L. .029 



K. .027 K. .03* 



Table of capacities for heat. Thomson's 

 chemistry. I. R. I. 



According to the doctrine which derives many of the 

 variations of sensible heat from the variations of capacity of 

 the substances concerned, the heat extricated by compres- 

 sion, and absorbed in dilatation, must be referred to such a 

 change of capacity, and every substance must have its ca- 

 pacity diminished in proportion as it occupies less space. 

 We may endeavour to ascertain in what ratio this diminu- 

 tion of capacity takes place, supposing, as the most pro- 

 bable ground of calculation, tfcat a condensation in a given 

 degree diminishes the total capacity in a given ratio, what- 

 ever the initial density may have been : the capacity must 

 therefore be supposed to vary as a certain power of the 

 rarity; and taking — 1400° as the natural zero, we may 

 inquire what that power is. In Mr. Dalton's experiments, 

 50 degrees of heat, or somewhat more, were produced when 

 the air was readmitted into a space partially exhausted: 

 now it is evident that this cannot be the whole change of 

 temperature of the air so compressed, since it is mixed with 

 the air admitted, which is left in its original state of equili- 

 brium. Suppose the density of the air in the receiver at so" 

 F. to have been diminished x times, then its capacity will 

 be diminished by compression x" times, and its temperature 

 will be increased I450ct'' — 1450; but this increase of 



