210 PECULIARITIES IN THE MAGNETISM 
formed of the source of those currents which the 
hypothesis of Ampére required.* 
13. Seebeck’s discovery, however, tended to 
establish a probability, at least, that such currents 
are in operation, and although that discovery has 
not thrown any new light on the direct influence 
of heat on magnetic action, but only through the 
mediate agency of electricity, it commenced a 
new and highly interesting era in terrestrial 
magnetic inquiries. 
14, Ina memoir read to the London Electrical 
Society, in March, 1838, I stated that I had 
discovered “some novel facts, which, to me, 
appeared exceedingly important by their throwing 
a new light on the action of caloric on magnetism.”{ 
15. In the discovery of some of these facts, I 
was anticipated by Professor Kuppfer, who, as I 
* Father Beccaria, about sixty years before, stated as his 
opinion, that terrestrial magnetism was due to electricity.— 
See his work on electricity. 
+ Mr. Fox, and Mr. Henwood have shown that electric 
currents exist in the Cornwall mines.—Annals of Electricity, 
vol. i. 
t See my “Second Memoir,” Transactions of the London 
Electrical Society; also Annals of Electricity, vol. iv. p. 46. 
