Another form of decoration in which gold was employed was lustre ware. Mr Burton thinks the application of a gold lustre to Staffordshire pottery was introduced first about 1792 at Etruria, and was used on Wedgwood’s “Pearl” dessert ware, made in the form of shells. If this lustre, or silver lustre, is laid on thickly, it converts the earthenware in appearance into gold or silver plate—an inartistic transformation. When, however, the lustre is thinly applied, the glaze of the ware is _stained_ to a purplish-pink colour, on which the metallic lustre sparkles like shot silk. The newly discovered metal platinum was used to produce the similar silver lustre, and during the period 1792-1810 many fine pieces were produced by the Wedgwoods (and by, among others, John Aynsley of Longton), covered with either the gold or silver plating or lustre.[152] Other Stoke potters at the end of the eighteenth century were the Booths of Cliff Bank, and Thomas Woolfe. Their factories are both shown on the map of the Potteries in 1802 which is here inserted. Hugh Booth (1732-89)[153] made a considerable fortune, and was succeeded by his brother and nephews, Ephraim, Hugh and Joseph Booth. Thomas Woolfe (died 1818)[154] contests with the elder Spode[155] the credit of being the first to employ steam power in their factories, to drive the flint and glaze mills. Both Aikin and Shaw agree in dating this innovation about 1793. Woolfe’s son-in-law, Robert Hamilton, joined the firm for a time, but before 1817 the factories of both Woolfe and the Booths had passed into the hands of William Adams (1772-1829), the successful progenitor of the present potting family of Adams. CHAPTER IX. METHODISM AND THE CAPITALISTS.