GALYAIISM. 



} Origin of the Discovery. Galvani Professor at Bologna. Accidental Effect on Frogs. Igno. 

 ranee of Galvani. His Experiments on tlie Frog. Accidental Discovery of the Effect of Metal- 

 lic Contact. Animal Electricity. Galvani Opposed hy Volta. Volta's Theory of Contact Pre- 

 vails. Fabroni's Experiments. Invention of the Voltaic Pile. La Couronne de Tasses. Na- 

 poleon's Invitation to Volta. Physiological Effects of the Pile. Anecdote of Napoleon. Decom- 

 position of Water. Cruickshank's Experiments. Davy commences his Researches. Effect of 

 Chemical Action discovered. Hitters Secondary Pile. Calorific Effectsof the Pile. Hypothesis 

 of Grotthns. Davy's celebrated Bakerie.n Lecture. Prize awarded him hy the French Acad- 

 emy. His Discovery of the Transferring Power of the Pile in Chemical Action. His Electro- 

 chemical Theory. Decomposition of Potash and Soda. New Metals, Potassium and Sodium. 

 Discovery of Barium. Strontium, Calcium, and Magnesium. Rapid Discover}' of the other new 

 Metals. Dry Piles. 



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