DK. W. TKAVEKS, ME. G. SENTEK, A^'l) DE. A. JAQUEEOD 
1H4 
Jf' (iTir conclusion is coirect, that the pressure-coefficient for hydrogen and for 
helium has the value 0’00366255, and is independent of the pressure below 
lOOO millims. of mercury, it is probable that the melting-point of ice on the absolute 
scale does not lie very far from 273°'03. Before we can apply Bose-Inxes’ equations 
(/oc. cit., p. I 0()) to the in\'estigation of the problem, it will be necessary, however, to 
obtain a more complete knowledge of tlie thermo-dynamic properties of these 
