To summarize, if Ghosh's equation for i is accepted
without consideration of the theory on which it is based, then
the boiling point results indicate that tetraethylammonium iodide
and tetrapropylammonium iodide dissociate in methyl alcohol like
binary salts. On the other hand, because of the constancy of C,
the boiling point results do not absolutely disprove Ghosh's
assumption as to the dissociation of tetraethylammonium iodide in
methyl alcohol solution.
The two substituted ammonium salts have similar boiling
points for similar concentrations. The elevation of the boiling
point is less than for a solution of potassium iodide of a similar
concentration. These results are in qualitative agreement with
Ghosh's theory and his assumption as to the behaviour of
substituted ammonium salts.
As a support to the thesis I enclose a paper entitled
"The Velocity of Ionisation at Low Temperatures" which appeared
in the Journal of the Chemical Society in 1915.