[15] There is an unaccountable mistake of one year in Mr. Crompton's age as engraved on his tombstone.
[16] Memoir, by Dr. T. S. Trail, Encyclopædia, Britannica.
[17] Youngest son of James Watt.
[18] Davy also reduced by voltaic electricity alumina, but aluminium was first obtained in a perfectly separate state by Wohler in 1827.
[19] The meshes or apertures of the wire gauze ought not to be more than one twenty-second of an inch in diameter.—Brougham's Lives of Philosophers.
[20] Called at first Georgium Sidus in honour of George the Third.
[21] This machinery was constructed by John Rennie.—Mechanics' Magazine, Sept. 20, 1861.
[22] 20,000l., the reward offered for a chronometer sufficiently exact to correct the longitude within certain limits required by Act of Parliament.
[23] A very interesting account of Maudslay's introduction, &c., to Bramah is given by Mr. Smiles in his 'Industrial Biography.' London 1863. P. 201-3.
[24] See 'Memoir of Bramah.'