[1] Recollections of the late Captain Charles Thomas, manager of Dolcoath.

[2] Captain Samuel Grose's recollections

[3] See the 'Mechanics' Magazine,' June 3rd, 1870.

[4] See Stonebreaker of 1803, vol. i., p. 239.

[5] See Steam-crane, vol. i., pp. 162, 274.

[6] 'Lives of the Engineers,' by Smiles, vol. ii., p. 260.

[7] See letter, 4th February, 1813, vol. i., p. 248.

[8] Trevithick's letter, May 20, 1813, chap. xxi.

[9] See letter to Mr. Rastrick, January 26, 1813, chap. xviii.

[10] See Trevithick's letter, 10th March, 1812, chap, xx.

[11] See Trevithick's letter, 26th March, 1812, chap. xv.

[12] See rough draft, Trevithick's letter, 7th December, 1812, chap. xvii.

[13] Captain Samuel Grote's recollections, 1858.

[14] Recollections of Captain H. A. Artha, Penzance, 1868.

[15] Recollections of Henry Vivian, Harvey and Co.'s Works, 1869.

[16] Recollections of Captain H. A. Artha, Penzance, 1869.

[17] Recollections of Banfield, foreman with Harvey and Co., Penzance, 1869.

[18] Recollections of Mr. Warren, master ship-builder, Harvey and Co., 1869.

[19] Recollections of Mr. Burral, jun., master boiler-maker, Harvey and Co., 1869.

[20] Recollections of Mr. William H. Pape, Bridgenorth, 13th June, 1869.

[21] Recollections of Mrs. Marm, Bridgenorth, 12th June, 1869.

[22] See vol. ii., p. 38.

[23] Captain Samuel Grose's recollections. 1858. Gwinear.

[24] Captain H. A. Artha's recollections. Penzance, 1869.

[25] See Trevithick's letter, January 26th, 1813, chap, xviii.

[26] Recollections of the late Captain Charles Thomas, manager of Dolcoath Mine.

[27] Recollections of Mr. James Banfield, Penzance, 1871.

[28] See Stuart's 'History of the Steam-Engine.'

[29] Henry Clark of Redruth, in 1869, aged eighty-three years.

[30] See full copy of patent, chap. xvi.

[31] Lean's 'Historical Statement of the Steam-Engine,' p. 7.

[32] Lean's 'Historical Statement of the Steam-Engine,' p. 7.

[33] Belonging to Williams and Co.

[34] Still working in Harvey's foundry at Hayle, 1869.

[35] Recollections of Captain H. A. Artha, Penzance, 1870.

[36] Captain Artha became the resident engineer at the Real del Monte mines in Mexico; Captain Samuel Grose, one of the first Cornish mine engineers; and Mr. Burral, the engineer of a department at the engine-works of Messrs. Harvey and Co.

[37] Lean's 'Historical Account of the Steam-Engine in Cornwall,' pp. 11, 32, 36.

[38] See Trevithick's letter, January, 1813, vol. ii., p. 55.

[39] Portion of a letter written at Penzance, 8th February, 1853.

[40] Mr. John Williams had the remarkable dream, many hours before the event, enabling him to describe the particulars of the assassination of Perceval in 1812.

[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.'

[51] See vol. i., p. 30.

[52] Lean's 'Historical Statement of Steam-Engines in Cornwall,' p. 7.

[53] 'Records of Mining,' by John Taylor, F.R.S., &c., part i., p. 155; published 1829.

[54] See vol. i., p. 95.

[55] Henry Clark's recollections in 1869.

[56] Working in the Valley smiths' shop, in Dolcoath Mine, in 1869.

[57] See vol. i., p. 25.

[58] See vol. i., p. 128.

[59] Stuart's 'History of the Steam-Engine,' published 1824.

[60] See Trevithick's letter, August 22nd, 1802, vol. i., p. 153.

[61] See Trevithick's letter, May 2nd, 1803, vol. i., p. 158.

[62] See vol. i., p. 128.

[63] See Trevithick's letter, 22nd February, 1804, vol. i., p. 161.

[64] See Trevithick's letter, 4th March, 1804, vol. i., p. 166.

[65] See Trevithick's letter, 9th March, 1804, vol. i., p. 168.

[66] Recollections of Henry Clark, living at Redruth in 1869.

[67] See Trevithick's letter, January 10th, 1805, vol. i., p. 324.

[68] Banfield's recollections in 1869.

[69] Recollections of Captain G. Eustace, engineer, residing at Hayle, 1868.

[70] See vol. i., p. 25.

[71] See vol ii., p. 119.

[72] Old John Bryant's statement in 1858.

[73] Clark's recollections in 1869, when he was eighty-three years old, and resided at Redruth.

[74] Captain Nicholas Vivian was a schoolfellow and intimate friend of Trevithick's; he resided at Camborne in 1858, when he gave his recollections.

[75] William Pooly worked the Dolcoath 76-inch engine in 1869; his recollections were given in the old engine-house, on the spot once occupied by Watt and his 63-inch great double engine.

[76] Smiles speaks of this as Bonze's.

[77] Three Wests, all skilful mechanical engineers, were employed at that time in Dolcoath, all of them known to the writer, who thinks the double-beat valve was the handiwork of John West, not related to Trevithick's partner.

[78] See Trevithick's letter, February 18th, 1806, vol. ii., p. 143.

[79] See vol. i., p. 25.

[80] See vol. i., p. 5.

[81] Query Bonze, spoken of by Smiles.

[82] See vol. i., p. 30; vol. ii., p. 115.

[83] Memorandum in Trevithick's writing.

[84] See vol. i., p. 46.

[85] See vol. i., p. 57.

[86] See vol. ii, p. 119.

[87] See vol. i., p. 90.

[88] See vol. i., pp. 30, 57; vol. ii., p. 115.

[89] See vol. i., p. 91.

[90] See vol. i., p. 91.

[91] See vol. ii., p. 142.

[92] See Trevithick's letter, January 26th, 1813, vol. ii., p. 55.

[93] See vol. i., p. 41.

[94] Lean's 'Steam-Engine in Cornwall.'

[95] See vol. i., p. 21.

[96] See vol. i., p. 25.

[97] See vol. ii., p. 120.

[98] See vol. ii., p. 122.

[99] See Lean's report, vol. ii., p. 175.

[100] See vol. i., p. 106.

[101] Smiles' 'Lives of Boulton and Watt,' p. 228.

[102] Appendix A to Tredgold, 'Pole on Cornish Engines,' p. 49.

[103] 'Phil. Mag. and Annals,' N.S., vol. viii., p. 309, by W. J. Henwood.

[104] Ibid., p. 313.

[105] Ibid., vol. i., p. 127.

[106] 'Records of Mining,' p. 163.

[107] Alteration in the boilers that year.

[108] 'Phil. Mag. and Annals,' vol. x., p. 97, "Notes on Some Recent Improvements of the Steam-Engine in Cornwall," by W. Jory Henwood, F.G.S.

[109] See Rees 'On the Steam-Engine,' published 1819.

[110] See vol. i., p. 166.

[111] See Watt's statement, vol. ii., p. 115.

[112] See "Steam-Engine," published 1860.

[113] See letter of Michael Williams, chap. xix.

[114] Henwood, 'Edinburgh Journal of Science,' 10.

[115] Address, Royal Institution of Cornwall, by W. J. Henwood, 1871.

[116] Trevithick calculated 84 lbs. to a bushel; Watt generally 112 lbs.; Lean 94 lbs., but latterly 112 lbs.

[117] Stuart 'On the Steam-Engine,' p. 141.

[118] See Lean's Historical Statement, p. 154; published 1839.

[119] See vol. i., p. 7.

[120] See vol. i., p. 194.

[121] See London locomotive, vol. i., p. 198.

[122] Made by Harvey and Co., Hayle, 1870.

[123] Residing at Angarrack, near Hayle, 1872.

[124] See Trevithick's letter, 22nd May, 1813, vol. ii., p. 198.

[125] See Trevithick's letters, 22nd Sept. and 23rd Oct., 1813, vol. ii., pp. 206, 209.

[126] Unfinished rough draft of letter by Trevithick.

[127] See Trevithick's letter, December 9th, 1815, vol. ii., p. 31.

[128] See 'Historical and Descriptive Narrative of Twenty Years' Residence in South America,' by W. B. Stevenson, published 1842.

[129] See Miers' 'Travels in Chili and La Plata,' published 1826.

[130] In 1834 the writer was employed at a marine engine works in London, and made working drawings for a scheme of Lord Dundonald's, who expressed great pleasure in meeting the son of his old friend.

[131] In 'Mining Journal,' W. R. Rutter.

[132] Probably referring to the Welsh locomotive of 1804.

[133] Sir Edward Watkin contemplated writing a life of Trevithick.

[134] See 'The Times,' 7th May, 1872.

[135] Description in Trevithick's handwriting.

[136] Rough draft, by Trevithick, of unfinished letter.

[137] See 'The Times,' August 12th, 1870.

[138] See vol. i., p. 302.

[139] See vol. i., p. 329.

[140] See letter, vol. ii., p. 332.

[141] See Trevithick's letter, vol. ii., p. 315.

[142] See vol. i., p. 5.

[143] See vol. ii., p. 37.

[144] See vol. ii., p. 208.

[145] See vol. ii., p. 168.

[146] See vol. i., p. 243.

[147] See vol. i., p. 343.

[148] See vol. ii., p. 129.

[149] See vol. ii., p. 108.

[150] See letter from Mr. Michael Williams, vol. ii., p. 109.

[151] See vol. ii, p. 129.

[152] See Mr. Taylor's report on Herland engine, vol. ii. p. 118.

[153] See Lean's report, vol. ii., p. 175.

[154] See 'The Times,' October 26th, 1871, Half-yearly Report of the Chairman.

[155] See vol. ii., p. 134.

[156] See vol. ii., p. 91.

[157] See vol. ii., p. 104.

[158] 'Observations on the Steam-Engine,' by Davies Gilbert, V.P.R.S., January 25th, 1827. See 'Philosophical Transactions.'

[159] See letter, vol. ii., p. 143.

[160] See vol. ii., p. 185.

[161] See drawing, vol. ii., p. 169.

[162] See patent specification, vol. i., p. 132.

[163] See vol. i., p. 335.

[164] See Trevithick's letter, 7th December, 1812, vol. ii., p. 18.

[165] 84 lbs.

[166] See vol. ii., p. 71.

[167] See vol. i., p 354.

[168] See vol. ii., p. 171.

[169] See Query 3rd, vol. ii., p. 19.

[170] See Trevithick's letter, January 24th, 1829, vol. ii., p. 368.

[171] See Trevithick's letter, 7th May, 1815, vol. i., p. 364.