of Abraham Darby. For more than one hundred years after the night in which Thomas and his master made their successful experiment of producing an iron casting in a mould of fine sand, with its two wooden frames and its air-holes, the same process was practiced and kept secret at Coalbrookdale, with plugged keyholes and barred doors John Thomas married Grace Zeane in Bristol in 1714, and died in 1760. Their son Samuel settled at Keynsham as a wire drawer, and married Esther Derrick in 1746. They had a son John, born in 1752, who commenced business as a grocer on the Somerset side of Bristol Bridge, the business being still carried on under the name of John Thomas, Sons and Company. In 1776 John Thomas (the second) married Elizabeth Ovens, of Bristol and they had ten children. The chief interest of this John Thomas's life was the promotion of waterways for the facilitating of trade, especially the Somersetshire Coal Canal, and the proposed Kennet and Avon Canal to connect Bath with London. John Thomas retired in 1812 and purchased Prior Park near Bath, where he died 3 3mo. 1827, aged seventy-five. The fifth son of John and Elizabeth Thomas was George Thomas, the noted Bristol Quaker Philanthropist. He was born 1791 and died s. p. 1869. Gibson, Charles R.: The Romance of Coal. London, Seeley Service Co., 1923. Journal Friends Historical Society, Vol. 17, 1920, pp. 19-32. Pamphlet by J. F. Nicholls, Bristol City Librarian, c. 1870.