[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.