[9] Derek Clifford, A History of Garden Design (London: Faber, 1962), pp. 138-9.
[10] "Poetry, Painting, and Gardening, or the Science of Landscape, will forever by men of taste be deemed Three Sisters, or the Three New Graces who dress and adorn nature": MS. annotation to William Mason's Satirical Poems, published in an edition of the relevant poems by Paget Toynbee (Oxford: Clarendon, 1926), p. 43. For an anthology of similar comments see The Genius of the Place: The English Landscape Garden 1620-1820, ed. John Dixon Hunt and Peter Willis (London: Elek, 1975).
[11] See Kenneth Woodbridge, Landscape and Antiquity (Oxford: Oxford Univ. Press, 1970), plates 2a, 2b, and 3.
[12] On this see Derek Clifford, op. cit., pp. 140 and 158.
[13] I. W. U. Chase, Horace Walpole: Gardenist. An edition of Walpole's 'The History of the Modern Taste in Gardening' with an estimate of Walpole's contribution to landscape architecture (Princeton: Princeton Univ. Press, 1943), p. 26.
[14] This is an apt example of the psychological theory of sight proposed by E. H. Gombrich, Art and Illusion (New York: Pantheon, 1961).
[15] Three Essays: On Picturesque Beauty; on Picturesque Travel; and on Sketching Landscape (London, 1792), p. 49.
[16] Carl Paul Barbier, William Gilpin, His Drawings, Teaching and Theory of the Picturesque (Oxford: Oxford Univ. Press, 1963), pp. 71, 106 and 139.
[17] Op. cit., p. 49.