Dedication. 
ao 
TO SIR WILLIAM SNOW HARRIS, F.R.S., 
: ETC. HC. 
My dear Sir, 
I have great pleasure in dedicating this Work to 
you, as a sowvenir of the pleasant hours passed in your 
society when you last visited Paris. If it meet with a 
fraction of the success which has attended your admirable 
contributions to Electrical Science, I shall feel justified 
in having inscribed it to you. 
Believe me, 
My dear Sir, 
Yours very sincerely, 
T. i. Paapeson. 
