All the school education young Josiah received was over in his ninth year, and it amounted to only a slight grounding in reading, writing, and arithmetic. But his practical or technical education went on continually, while he afterwards supplemented many of the deficiencies of early years by a wide course of study. After the death of his father, he began the practical business of life as a potter in his ninth year, by learning the throwing branch of the trade. The thrower moulds the vessel out of the moist clay from the potter's wheel into the required shape, and hands it on to be dealt with by the stouker, who adds the handle. Josiah at eleven proved a clever thrower of the black and mottled ware then in vogue, such as baking-dishes, pitchers, and milk-cans. But a severe attack of virulent smallpox almost terminated his career, and left a weakness in his right knee, which developed, so that this limb had to be amputated at a later date. He was bound apprentice to his brother Thomas in 1744, when in his fourteenth year; but this weak knee, which hampered him so much, proved a blessing in disguise, for it sent him from the thrower's place to the moulder's board, where he improved the ware, his first effort being an ornamental teapot made of the ochreous clay of the district. Other work of this period comprised plates, pickle-leaves, knife-hafts, and snuff-boxes. At the same time he made experiments in the chemistry of the material he was using. Wedgwood's great study was that of different kinds of colouring matter for clays, but at the same time he mastered every branch of the art. That he was a well-behaved young man is evident from the fact that he was held up in the neighbourhood as a pattern for emulation. [Illustration: Wedgwood at Work.]