W. A. Norton—Molecular and Cosmical Physics. 448 
by one envelope upon another remains very nearly the same 
or considerable augmentations or diminutions in the distance 
tween them, about the natural position of equilibrium (the 
point a in the curve of molecular action, p. 839); also that when 
the ratio ~ is greater than 6°9, the corresponding effective 
attraction increases, from any distance less than Oa, fig. 4, 
to a certain distance greater than Oa; and that when the same 
ratio is less than 6-9, the attraction in question increases, from 
any distance greater than Oa, to a certain distance less than 
Oa. us the maximum value of this attraction is at the dis- 
n 
tance Oa when ~=69, at a greater distance when — > 6-9, and 
at a less distance when ~< 69. This will appear on con- 
sulting the following table, giving the results of the calculations. 
*The more accurate value is 6-7, in this and the following cases. 
