1. James Hutton's Theory of the Earth and His Theory of Matter
2. X. Theory of the Earth; or an Investigation of the Laws observable in the Composition, Dissolution, and Restoration of Land upon the Globe.
3. The Reaction to James Hutton's use of Heat as a Geological Agent
4. I use this phrase here as I have used it in my book, to identify those theories that treat heat, what-ever name it is given, as a substance that combines in a chemical manner with other substances, as opposed to those theories, called mechanical, that treat heat as a mode of motion; see A. L. Donovan,Philosophical Chemistry in the Scottish Enlightenment, The Doctrines and Discoveries of William Cullen and Joseph Black, Edinburgh, 1975, 271–6; see also the translator's footnote to the opening passage of the section on Fire in Hermann Boerhaave,A New Method of Chemistry . Translated from the original Latin . By Peter Shaw, 3rd. ed., 2 vols., London, 1753, 2o6. In calling Hutton's theory of heat essentially chemical I part company with Gerstner and Schofield, who see Hutton as a neo-mechanist; cf. Gerstner (3), 359–61, and Robert E. Schofield,Mechanism and Materialism: British Natural Philosophy in an Age of Reason, Princeton, 1970, 271–6. For a critique of Schofield's mechanist-materialist dichotomy of eighteenth-century British natural philosophy, see P. M. Heimann and J. E. McGuire, "Newtonian Forces and Lockean Powers: Concepts of Matter in Eight-eenth-Century Thought", inHistorical Studies in the Physical Sciences, ed. Russell McCormmach,3, 235 n. 3, 1971 and,011Hutton,ibid., 281–304.
5. A. L. Donovan, "Scottish Responses to the New Chemistry of Lavoisier", paper read at the 1978 annual meeting of the American Society for Eighteenth-Century Studies, forthcoming.