XVIU 



CONTENTS 



Count Rumford ..... 



Martin Heinrich Klaproth and John Dalton 



Louis Joseph Gay-Lussac and Alexander von Humboldt 



Humphrey Davy and Jacob Berzelius 



Thomas Young, Josef Fraunhofer and Augustin Fresnel 



Hans Christian Oersted 



Pierre Simon Laplace and Andre Marie Ampere 



Sadi Carnot 



Georg Simon Ohm . 



Karl Friedrich Gauss 



Michael Faraday 



Wilhelm Weber 



Julius Robert Mayer, James 

 Hermann Helmholtz . 



Rudolf Clausius and William Thomson, Lord Kelvin 



Charles Darwin and Carl Linnaeus 



Robert Wilhelm Bunsen and Gustav Kirchhoff 



James Clerk Maxwell 



Wilhelm Hittorf and William Crookes . 



Josef Stefan and Ludwig Boltzmann 



Heinrich Hertz 



Friedrich Hasenohrl 



Prescott Joule, and 



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