210 JOURNAL OF THE WASHINGTON ACADEMY OF SCIENCES VOL. 13, No. 10 
clearly indicates this, provided that space is isotropic or that if, when 
any one coordinate is selected and named one thing, such as time, or 
self induction, the others are at once determined by their relation to this. 
Mass and energy have the dimensions of volume. In the terms of the 
ether this means that the energy of the ether, like its mass, is every- 
where the same. : 
But if time is kept as a separate entity not to be equated with a 
length, then energy is more than mass. For energy is magnetic flux X 
electric quantity per second, and mass is magnetic flux <X time. And 
mass is certainly more than inertia since mass is the product of three 
variables, Li, L2, L;, whereas inductance has but one, L. 
The bearing of these results on the numerical relations of the con- 
stants of nature will be considered in a following paper. 
