Note 408 — Chapter V · THE MULE AND THE RISE OF A NEW COTTON MANUFACTURE
Reading edition
Kennedy, Brief Memoir of Samuel Crompton, pp. 339, 344-345.
Heathcote’s machine was patented about 1809 and soon afterwards he is said to have obtained five guineas a yard for lace which in 1844 could be equalled at eighteenpence a yard (Dodd, Textile Manufactures of Great Britain (1844), pp. 210-211).