NATURE'S MIRACLES, VOL. III. 



Electricity 



anb /Ifcagnetism 



ELISHA GRAY, PH.D., LL.D. 



WILLIAM BRIOGS 

 29-33 Richmond St. West, Toronto 



( . \V. COATES, Montreal, Quo. 

 8. F. HUKSTIS. Halifax. N.S. 



