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 ... revolutions of the electrical machine is a very fallacious method. 415] I found, upon trial*, that though a shock might be procured from this artificial torpedo, while held under water, yet there was too great a disproportion between its strength,...  An Introduction to the Modern Classification of Insects: Founded on the ... - Página 108 de John Obadiah Westwood - 1839 - 462 páginas Visualização completa - |