132 



BULLETIN OF THE 



of the Quiiicy ; Messrs. Cooper and Patch, of tlie Detroit and Portage 

 Lake smclting-works ; G. D. Bolton, M. E., and Capts. Iloatson, Dan- 

 iel, and Wells, of the Cakunet and Hecla; Mr. Frank Osburn, of the 

 Troy Polytechnic School ; Agent Delano, of the Phoenix ; and espe- 

 cially to Agent B. F. Emerson and Captain John H. Moyle, of the 

 Copper Falls mine ; and others. 



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Cambriuge, Mass., May 18tli, 1880. 



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