Index to Bryan Donkin's 1893 article: "The Scientific Work of Gustav Adolph Hirn" in Transactions of the Manchester Association of Engineers. [1]

In thermodynamics, the term human thermo-dynamics was first used in the index to 1893 Transactions of the Manchester Association of Engineers in reference to chapter five of English engineer Bryan Donkin's paper "The Scientific Work of Gustav Adolph Hirn". [1]

The seven-page chapter presented the results of French physicist Gustave Hirn’s 1856 experiments in the determination of the mechanical equivalent of heat of a human being in working action. The term thermo-dynamics, to note, was coined in 1849 and stayed in use well into the 1920s, when thereafter the subject lost the hyphen.

See also
● Human thermodynamics (etymology)

References
1. Donkin, Bryan. (1893). “The Scientific Work of Gustav Adolph Hirn in 7 Chapters (1845-1888)” (pgs. 145-201); Picture of Hirn, (pg. 144); Chapter V: Human thermodynamics, pg. 176-83)”, Transactions of the Manchester Association of Engineers (table of contents: human thermo-dynamics, pg. 176). Herald & Walker Printers.