|The "branches" and "roots" of the tree of thermodynamics, having the mechanical theory of heat as its trunk.|
1. (a) Clausius, R. (1865). The Mechanical Theory of Heat – with its Applications to the Steam Engine and to Physical Properties of Bodies. (Google Books). London: John van Voorst, 1 Paternoster Row. MDCCCLXVII.
(b) Clausius, Rudolf. (1879). The Mechanical Theory of Heat, (2nd ed). London: Macmillan & Co.
● Walker, William L. (1877). The Rotation of the Earth and Planetary Bodies, Considered as the Product of a Change of Motion, under the Mechanical Theory of Heat. S.W. Green.