PROPERTIES OF MATTER IN' THE GASEOUS STATE. 
845 
(b.) In my former paper (Proc. Roy. Soc. 1874, p. 407) 
_ d v~cv 
9 6 
Therefore, since 
and putting cx = a, c — A, 
Id „ , d 
p=--v“, and ~=p. 
3 9 9 
p = p?~, v— v 7 fa, and hv— 
u 
5= 
'6 V 77 H 
2 18 c 5 ' 
