244 W. A. Norton on Molecular Physics. 
polarization received will be the same as before. In this respect 
substances may differ, or they may have different “ specific in- 
ductive capacities,” as maintained by Faraday. _ It is, in fact, just 
this difference of property that constitutes the difference between 
conduction and non-conduction, or between the different degrees 
of conduction or of non-conduction. 
So long as the charge of electricity on the surface 8, fig. 6, 
the outward flow of the electricity is partly the result of the mu 
tual repulsion between contiguous atoms of the electric ~— 
Let us suppose two extreme cases, compatible with our g é 
ral theory. (1.) Let there be an indefinite line of st es; 
a 
at the surface of the molecular atmospheres, and see a 
quantity of free electricity to arrive at one end of this pene | 
before it a certain quantity of electricity throughout the whole 
ength of the line, and that if the flow be unchecked it can 
little or no disturbing action upon the molecular atm do 
except very near their surface, and cannot polarize apne 
this the moving electricity must have a certain deci ed OTT 
- 
that is, be present in a certain sufficient quantity at mae arfect 
of the line. This would be the case of perfect, or near 
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