English
The correlation of physical forces, by W. R. Grove. 1st American from 4th English ed -- On the interaction of natural forces, by H. L. F. Helmholtz -- Remarks on the forces of inorganic nature, by J. R. Mayer -- On celestial dynamics, by J. R. Mayer -- Remarks on the mechanical equivalent of heat, by J. R. Mayer -- Some thoughts on the conservation of force, by Dr. Faraday -- On the connection and equivalence of forces, by J. von Liebig -- On the correlation of physical and vital forces, by W. B. Carpenter
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