CHEMICAL PRINCIPLES. 
137 
just determined on tlie composition of tellurium with hydrogen, Co'ih'Vatlons 
that the latter contains one volume of tellurium, and two riunu 
volumes of hydrogen. But on considering the experiments of 
Messrs. Thenard and Gay Lussac on the composition of the 
phosplioret and arseniuret of gaziform hydrogen, as ex.nct, it 
follows that there is one volume and a half of hydrogen combined 
with the phosphorus or the arsenic, because in these the hydrogt n 
gas which remains, expands itself to one half the original 
volume of the compuned gas, Now, if the acid gases necea- 
sarily combine with equal volumes of the saline bases, considered 
in the form of gas, and if the hydrogen, in the acids hydroge- 
aiurets be necessarily in the same proportion to the oxigen of the 
aasc, as in water, it follows that sulphuric gas and the tellurate 
af oxygen contains that portion of hydrogen, but that the 
bhosphoret and arseniuret of hydrogen contain one and half a 
ts volume of hydrogen, and that consequently this moiety of a 
'olume of hydrogen, which does not separate from the cora- 
rination, must oppose itself to the combination. But it * 
pppeais, that we are, as yet, too little initiated in these matters, 
o be able to draw conclusions in which we may venture to 
»lace confidence. , 
TTke Conclusion has been duly received, and will shortly appear.} 
I 
No. i66.— VoL. XXXVI. 
L 
]METEO- 
