Such were the conditions under which the salt glaze of Staffordshire and the agate of Staffordshire were produced and perfected; and having traced these manufactures to their climax, it now remains to describe the rise of cream-coloured earthenware—the cream colour, which under Wedgwood became universal and perfected as we know it to-day. But it would be a mistake to attribute all good cream colour to Wedgwood. Just as all red teapots get put down to Elers; or as salt glaze is divided between Dr Thomas Wedgwood and Astbury according to character; and just as all another class of ware with irregular splashes of coloured glaze is called “Whieldon,” so much that Wedgwood never put his hand to has got dubbed with his name, to the exclusion of contemporaries as enterprising, such as Warburton and Turner, and to the neglect of predecessors who, like Astbury and Booth, had already done very much to make Wedgwood’s development of the cream colour possible. The ordinary earthenware cream-colour body was composed of ball clay from Dorsetshire, calcined flint, and the lighter burning local clays. After the discovery of china clay and china stone in Cornwall about 1770, these two bodies both came to be added to the standard mixture, and the local clays were gradually dropped.[82] The glaze invented by John Greatbach while at Etruria, and called “Greatbach’s China Glaze,” finally completed the development of the cream colour.[83] In practice the results depended so largely upon the exact composition of body and glaze, the exact temperature of firing in biscuit and glost ovens, and the subsequent decoration, that different potters achieved different results from their cream ware, and very different reputations. Josiah Wedgwood, with whom we must now deal, with his so-called Queen’s Ware, achieved undisputed pre-eminence, and became the greatest agent in the world-wide distribution of the cream-coloured earthenware of North Staffordshire.[84] Josiah Wedgwood, thirteenth child of Thomas Wedgwood, master potter of the Churchyard works in Burslem, was baptized in Burslem church on July 12, 1730. He was a son, grandson and great-grandson of potters. His brothers, his cousins and his uncles made pots, and many had left an enduring reputation behind them. Josiah too was apprenticed to the trade in 1744 in his eldest brother’s works by the Churchyard side at Burslem.