Note 25 — I A Sketch of the History of the Idea of Milieu Down to the Nineteenth Century

System of Positive Polity (4 vols., London: Longmans, Green & Co., 1875–77—the original was published in 1851–54), vol. II, p. 364: “... a study [of the aggregate of material influences: Astronomical, Physical, Chemical] which was commenced by the great Hippocrates in his admirable and unequalled Treatise upon Climate.”