1. John Ehrman, The Younger Pitt (3 vols, London: Constable, 1969–96), III, p. 423.
2. Lucile H. Brockway, Science and Colonial Expansion: The Role of the British Royal Botanic Gardens (New York: Academic Press, 1979), p. 80.
3. Marie Boas Hall, All Scientists Now: The Royal Society in the Nineteenth Century (Cambridge: Cambridge University Press, 1984), p. 163.
4. Richard Drayton, Nature’s Government: Science, Imperial Britain, and the ‘Improvement’ of the World (New Haven: Yale University Press, 2000), p. 270. On this point see also Richard Drayton, ‘Knowledge and Empire’, in P.J. Marshall (ed.) The Oxford History of the British Empire II, The Eighteenth Century (Oxford: Oxford University Press, 2001), p. 233.
5. Sujit Sivasundaram, ‘Natural History Spiritualized: Civilizing Islanders, Cultivating Breadfruit, and Collecting Souls’, History of Science 39 (2001), 418; idem., Nature and the Godly Empire: Science and Evangelical Mission in the Pacific, 1795–1850 (Cambridge: Cambridge University Press, 2005).