D. Boboulief—Dissipation of Electricity in Gases. 128 
The new theory of the gases assumes that perfect gases are 
ach 
is performed in an infinitely short time. The same thing is 
experienced in the concussion of particles or balls of any kind 
of hard bodies.* 
present the action of the last, we find that the force operating on 
the atoms (represented also by their radius=r) in the direction 
from the center of the atom to the center of the body, is equal 
to > where 
* Clausius: Abhandlungen iiber die Mechanische Warme Theorie, tl, 235, 
or Maxwell, Illustrations of the Dynamical Theory of Gases, Part I. Phil. Mag? 
}, XIX, pp. 19, 20. 
t Considering the state of distribution of the electricity on two spheres under 
the influence of minute electrical forces. 
