[181] See Trevithick's letters, 8th July, 1815, vol. ii., p. 80; and 7th and 16th May, vol. i., pp. 364, 370.

[182] See vol. ii., p. 332.

[183] See vol. ii., p. 336.

[184] See 'Life of George Stephenson,' by Smiles, p. 279; published 1857.

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

[186] See Trevithick's letter, Sept. 23rd, 1804, vol. ii., p. 2.

[187] Mr. Armstrong's note, vol. i., p. 184.

[188] See vol. i., p. 104.

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

[190] See vol. ii., p. 169.