Adair Crawford FRS (1748–1795), a chemist and physician, is a pioneer in the development of calorimetric methods for measuring the specific heat capacity of substances and the heat of chemical reactions.
In his influential 1779 book "Experiments and Observations on Animal Heat", Crawford presents new experiments proving that respiratory gas exchange in animals is a combustion (two years after Antoine Lavoisier's influential "On combustion in general").
Crawford also is involved in the discovery of the element strontium.