Lane in 1762 under an agreement with Wedgwood to be paid by him fixed prices for his ware.[119] In any case Shaw is obviously wrong in calling these men salt-glaze potters, for makers of salt glaze did not usually apply it to the baking dishes and chamber pots whose prices were under discussion; and it is only in common and standard lines that prices can ever be regulated by a ring. Makers of ornamental salt glaze would have been the last people to combine, and the only ones known to have been making salt glaze at this time, Christopher Whitehead and the Baddeleys, do not appear on this list of Shaw’s at all. The most notable potters on this list of 1770 were the Warburtons and the Daniels of Cobridge. When the art of enamelling became localized at Hot Lane about 1750, John and Ann Warburton were among the most successful. They were potters of old standing, for a Warburton appears as a master-potter in the Burslem district in 1710-15. They did most of the enamelling for Wedgwood in his early days, and their son, Jacob Warburton (1740-1826), became a potter of great repute, above all on the Continent where his business was very extensive.[120] He spent many years travelling abroad and was a strange man among the rough potters of that day—a Roman Catholic, a great linguist, a famous skater; and for some reason he was always known as Captain Warburton. He was an intimate friend of Wedgwood, and in 1771 acted as his arbitrator in his case against Palmer.[121] When Enoch Booth invented the fluid glaze, the Warburtons were among the first to take it up, and their cream-coloured ware, enamelled with all their exceptional artistic skill, is often confounded with Wedgwood’s best productions.