1822.] Causes of Calorific Capacity, Latent Heat, S^c. 



26 



ANNALS, VOL. II. (New Series.) 



y Developed, 



60. P. 272. — The Fahrenheit tempera- 

 ture of ebullition increase* and decrease* 

 more rapidly than the compression, 



61. P. 273.— The temp, of the lique- 

 faction of solids is not influenced by exter- 

 nal pressure. 



62. Ibid. — Ebullition arises from vio- 

 lent decompositions in the interior, not at 

 the surface of the fluid. 



63. P. 363. — Evaporation is a decom- 

 position of the superficial particles arising 

 from the mutual collisions of the particles, 

 or the temperature of the body. 



64. P. 365. — In equal or unequal, but 

 great depths, the evaporation is at the 

 same temperature proportional to the ex- 

 posed superficies. 



63. Ibid Two portions of the same 



fluid cooled from any common to any other 

 common temperature by evaporation alone, 

 lose quantities proportional to the original 

 quantities of the fluids; conversely two 

 portions of the same fluid losing by evapo- 

 ration quantities proportional to their 

 ■weights, would be equally reduced in tem- 

 perature, if their temperatures were at 

 first equal. 



66. P. 368. — The incremental conden- 

 sation of any vapour at the same tempera- 

 ture in vacuo is, cceteris paribus^ as its 

 elasticity. 



67. P. 369.— The megethmerin being 

 the same, the increment of condensation is 

 AS the cube of the temperature. 



68. P. 370. — The incremental conden- 

 sation is as the elasticity and temperature 

 conjointly. 



69. Ibid.- — The incremental condensa- 

 tion in the same vapour is as the specific 

 gravity and cube of the temperature con- 

 jointly. 



70. Ibid. — Other things being alike, 

 the mixture of any quantity of gas with 

 vapour in a given space produces no effect 

 on the celerity of condensation, however 

 much it may augment the elasticity. 



7 1 . P. 372 —If there be suflScient fluid, 

 and the temperature the same, the tension 

 of the vapour will be the same whatever 

 space it occupies. 



72. Ibid. — Pressure has no effect in 

 augmenting or diminishing the absolute 

 evaporation of any fluid, the temperature 

 being the same. 



73. P. 373.— Calculations from the 

 preceding theory agree with six experi- 

 ments at a mean to within about fifteen 

 parts in a thousand of a grain. 



PHiENOMENA 



Confirmed by 

 Be Luc, Betancourt, Shuckburgh, Ac. 



Is a well-known fact, but I do not know 

 the discoverer, or who has made direct 

 experiments on it. 



Hamilton. 



It is generally, I think, admitted, that 

 evaporation takes place at the surface. 



Dalton, Leslie, &c. 



Shown in the scholium to be consistent 

 with phasnomena. 



The proof of these laws appears in t}»c 

 perfect agreement of the whole theory with 

 the experiments of Dalton, Gay-Lussac, 

 De Luc, &c. 



Dalton. 



The truth of this can appear only as 't 

 part of the general theory. 



Dalton. 



