[41] See Trevithick's account-book, vol. i., p. 90.
[42] Captain John Vivian's recollections, vol. i., p. 142.
[43] See vol. i., p. 336.
[44] See chap. xxi.
[45] Vol. ii., p. 37.
[46] Vol. i., p. 5.
[47] Borlase's 'Natural History of Cornwall.'
[48] See drawing, vol. i., p. 25.
[49] See Pryce's 'Mineralogia Cornubiensis,' published 1778. Appendix.
[50] Smiles' 'Lives of Boulton and Watt.'