1181 
boiling point and the triple point and the corresponding vapour 
densities, as found by calculation. These values have also served in 
the computation of the diameter constants. 
in HEEE 
Savane SMa, 
(es) IN ie) + (oh) N yee oO 
2 oa oo 2) Oe ©) 
oO ©, ©, (2) oO ie) ©, oO 
Fig. 1 
From the values of y(Q) the equation of the diameter was deduced 
by the method of least squares; the first three values nearest the 
critical point were, however, left out of account, since they gave a 
