S22 



COMBINATIOI^S OF OXIMURtATiC GAS AND dXIGEtr< 



quivocal proof of its materiality. A matter is thrown from 

 heated bodies, which moves in rip^ht lines, with velocity, 

 raises the temperature of any body, on which it falis; and 

 which, in every state, preserves the properties of caloric*'* 



no proof of its But are these proofs of materiality? By no means. If 

 every thing were material, of which these properties could 



, be predicated, then should we have proofs of something sub- 



stantial in sound and cofd. Thus sound is thrown from sur- 

 rounding bodies, in right lines, with velocity, is capable of 

 reflection and of condensation, occasions sound in some bo- 

 dies on which it falls, and, in every state, preserves the 

 properties of sound. Cold also moves in right lines, with 

 velocity, suffers reflection and condensation, lowers the 

 temperature of bodies, and is always and absolutely cold. 



** Lastly," it is said, that " the existence of caloric, in 

 the rays of the sun, apart from visible light, adds to the 

 proof, that a peculiar matter exists, possessed of the pro- 

 perties of caloric, and distinct from every other." 



It is sufficient to have mentioned this last alleged proof 

 of the existence of material caloric ; its validity rests en- 

 tirely on the supposition, that no other explanation can be 

 given of the phenomenon; and it will consequently fall to 

 be considered, in the second division of our subject. 



fTo be concluded in our next, J 



Heat of the 



Sun distinct 

 fiom light. 



This will be 

 considered 



hereafter. 



xu. 



On iome of the Combinations of Oximuriatic Gas and Oxigen, 

 and on the Chemical Relations of these Principles to in- 

 flammable Bodies. By Humphry Davy, Esq, LL, D. 

 Sec, R, S. Prof Chem, R. L F. R, S, E. 



(Concluded from p, 1 27. J 



5. On the Combinations of the Metals of the Earths with 

 Oxigen and Oximuriatic Gas. 



Muriates of -^ HE muriates of baryta, lime, and strontia, after being 

 the earths not a long time in a white heat, are not decomposable by any 



simple 



