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COLLEGE OF NEW JERSEY, 

 PRINCETON, N. J., June 19, 1885. 



MY DEAR SIR: 



Immediately after the delivery of your paper 

 on the discoveries of Dr. Joseph Henry, I ex- 

 pressed my strong personal desire to see it pub- 

 lished. 



I find that the College is at one with me in this 

 wish. 



We should like to have so comprehensive a 

 paper circulated in our day, and handed down 

 to posterity. 



I am yours ever, 



2 JAMES McCOSH. 



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EDWARD N. DICKERSON, LL.D. 



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