1822.] Causes of Calorific Capacity, Latent Heat, Sfc. 21 



ANNALS, VOL. I. (Nett> Scries.) 



Ph.€NOMENA 



Developed. 



6. P. 346. — If the elasticities of any 

 two gases have an invariable ratio, and 

 their temperatures an invariable ratio, 

 their volumes will have an invariable 

 ratio. 



7. Ibid — The temperature of water 

 freezing is to that of water boiling as \/ 8 



*o a/TlT 



8. P. 347. — The same results are ob- 

 tained by measuring the temperatures by 

 the elasticities, under an invariable vo- 

 lume, as by the volumes under an inva- 

 riable compression. 



9. P. 349 and 350.— Prop. 10, and its 

 corollaries. 



10. P. 401. — Sudden condensation in 

 gases produces heat, sudden rarefaction 

 cold ; if the condensation or rarefaction be 

 slowly made, no perceptible change takes 

 place. 



11. P. 402. — Gases transmit heat ra- 

 pidly, but feebly in right lines. 



12. Ibid. — The lighter the ga?, the 

 more rapidly it abstracts temperature 

 under certain circumstances. 



13. P. 403. — The baromerin of hydrogen 

 is four times greater than that of oxygen. 



14. Ibid. — Two particles of oxygen go 

 to one of hydrogen to form water. 



1 5. Ibid. — General theorem of temper- 

 ature. 



16. Ibid.— Absolute cold 448° Fahr. 

 below 32° Fahr. 



17. P. 406. — Megethmerin of mercury 

 to water as 1 to 2 ; masses of particles as 

 21 tol. 



18. Ibid. — Phaenomena of " capacity 

 for caloric " due to megethmerin. 



19. P. 407.— Phaenomena of " latent 

 heat'* due to aggregation and decomposi- 

 tion of particles. 



20. P. 408. — Law of attraction in very 

 small bodies at sensible distances inversely 

 as the square of the central distance, 

 directly as the mass of the attracted body, 

 and the temperature being the same, as 

 the mass of the central body. 



21. Ibid. — Particle attracted by a sphere 

 at a distance as mass of particle and mass 

 of sphere directly (temperature being inva- 

 riable) and square of central distance 

 inversely. 



22. Ibid. — Law of attraction on a per- 

 fectly solid imperviable cylinder shown. 



Confirmed hy 



No one directly, but the experiments of 

 De Luc and myself in consequence. 



De Luc and myself. 

 Mariotte, Dulong and Petit. 



Have not been proved directly by ahy 

 one, but may be inferred from the general 

 law of temperature confirmed by the expe- 

 riments of De Luc and myself. 



iMollet and Dalton. 



Leslie. 



Leslie, Davy, Dulong and Petit. 



Crawford's ratio of capacities nearly 

 confirm it. — (See vol. ii. p. 2 11.) 

 Ditto, ditto. 



De Luc's and my experiments (See 



p. 405, and vol. ii. p. 100.) 

 Ditto, ditto. 



Calculations and comparisons with ex- 

 periments of Henry (Dalton), p. 406 ; 

 also vol. ii. p. 208. 



Ditto ; also vol, ii. p. 202, 203, 445, 

 448, 453, 454, and 460. 



Expounded briefly, p. 407, fully in 

 theory, vol. ii. p. 256, and verified in 

 theory, p. 443, &c. by calculations from ex- 

 periments of Black, Watt, Rumford, KLir- 

 wan, Irvine, Lavoisier and Laplace, 

 Thomson, Ure, Crawford, Southern, &c. 



Newton. 



Newton. 



Cannot be confiraied but by irdu:ti()fi. 



