Mr. Herapath on True Temperature, and the [Jan. 



ANNALS, VOL. II. {New Series,) 



Phjcxomena 



Deveioped. 



46. P. 262. — Fluidity resulu either from 

 sphericity of particles, or the extent of their 

 aberrations overcoming the influence of 

 their irregularity of figure. Of course, 

 ■olidity results from irregularity of figure 

 and smallness of extent of a)rpuscular 

 vibrations. 



47. Ibid. — Carbonic oxide and oxygen 

 umte and form a gas (carbonic acid) with 

 a baromerin less than that of either of the 

 component gases, and with a greater spe- 

 cific gravity. 



48. P. ':^G4. — Solids may, under pecu- 

 liar circumstances, be converted into airs 

 "with an increase of temperature. 



49. P. 265.' — All changes which pro- 

 duce a greater number of particles out of 

 the same quantity of matter occasion a 

 iliminution of temperature; all changes 

 which diminish the number of particles 

 increase the temperature. 



50. Ibid.— Chemical rule " that all 

 chemical changes produce an alteration of 

 temperature," is pretty general, but not 

 universal ; and not a law of nature. 



51. P. '2^1. — Airs have generally their 

 particles less than those of fluids. Hence 

 in a given weight, there is generally a 

 greater number of particles in an air than 

 in a solid or fluid. 



52. P. 267, 268.— Condensation of va- 

 pours is owing to the irregularity of the 

 £gures of their particles, and, therefore, 

 occasioned by a diminution of tempera- 

 ture. 



33. P. 268. — Difference between va- 

 pours and gases, is merely in the figures 

 of their particles. 



64. Ibid. — Vapours unconnected with 

 their fluids, and at all higher temperatures 

 than that of their condensation, are perfect 

 gases, and follow the same laws. 



55. Ibid.— Mixture of different vapours, 

 or of vapours and gases, if no chemical 

 action take place, has the name law as 

 mixture of gases. 



56. P. 270.— Calculations of specific 

 gravity of steam at different temperatures. 



57. Ibid Pressure aids condensation 



of vapours ; this effect of pressure dimi- 

 niahes as the temperature increases. 



58. P. 271.— Two gases separately 

 incondensible mixed together may easily 

 coQdfnse. 



59. P. 272.— Temperature of ebullition 

 of all fluids is increased with an increase, 

 and diminished with a diminution of pres- 

 sure. 



Confirmed bif 



Berard and De Laroche. 



Explonon of gunpowder, Ac 



Discussion of parallel phenomena. 



Pheenomena of " specific heats *' which 

 show that the baromerins of airs usually 

 exceed those of fluids and solids. 



Well known phenomenon that lowness 

 of temperature produces condensation. 



The best proof of this is the coincidence 

 of the consequences in my theory of evapo- 

 ration with the experiments of Daltqa* 



Dalton. 



Dalton and Gay-Lussac. 



Experiments of Southern and Sharpe. 

 Dalton. 



Mixture of Sulphurons acid gas 2nd 

 hydrogen. 



Robinson. 



