W. A. Norton—Coggia’s Comet. 169 
It_ was conclusively established by Faraday, by a series of careful 
experiments, that the gases, with the exception of oxygen, are 
rapidly changing one, in approximate correspondence with the 
varying rate of the orbital motion. The circular magnetic cur- 
Inequality of the Solar Repulsion.—Faraday established that 
the diamagnetism of a gas increased with its temperature. But 
by changes of temperature. But may not material variations 
oO 
diamagnetic condition result from the ewe discharges to — 
which the gaseous molecules are expose 
Looking at the matter from the general point of view I have 
taken in my papers on Molecular Physics, it appears that such dis- 
* This Journal, II, vol. xli, Jan., 1866. 
