Nicholas W. Best, Lavoisier's 'Reflections on Phlogiston' II: On the Nature of Heat, Foundations of Chemistry, 2016, 18, 3–13. In this early work, Lavoisier calls it “igneous fluid”. The term “caloric” was not coined until 1787, when Louis-Bernard Guyton de Morveau, used calorique in a work he co-edited with Lavoisier ("Mémoire sur le développement des principes de la nomenclature méthodique" in Guyton de Morveau, L.-B., Lavoisier, A.-L., Bertholet, C.-L., Fourcroy, A.-F. (eds.) Méthode de nomenclature chimique, pp. 26–74. Cuchet, Paris). The word “caloric” was first used in English in a translation of Guyton's essay by James St John ("A memoir to explain the principles of the methodical nomenclature" in Method of Chymical Nomenclature, Kearsley, London (1788), pp. 19–50, at p. 22).
Nicholas W. Best, Lavoisier's 'Reflections on Phlogiston' II: On the Nature of Heat, Foundations of Chemistry, 2016, 18, 3–13. In this early work, Lavoisier calls it “igneous fluid”. The term “caloric” was not coined until 1787, when Louis-Bernard Guyton de Morveau, used calorique in a work he co-edited with Lavoisier ("Mémoire sur le développement des principes de la nomenclature méthodique" in Guyton de Morveau, L.-B., Lavoisier, A.-L., Bertholet, C.-L., Fourcroy, A.-F. (eds.) Méthode de nomenclature chimique, pp. 26–74. Cuchet, Paris). The word “caloric” was first used in English in a translation of Guyton's essay by James St John ("A memoir to explain the principles of the methodical nomenclature" in Method of Chymical Nomenclature, Kearsley, London (1788), pp. 19–50, at p. 22).