William Cookworthy was born at Kingsbridge in 1705, the son of a weaver. He was apprenticed to Timothy and Silvanus Bevan, chemists and druggists in Cheapside, London. As he was unable to afford the coach fare to London, he walked the whole 200-odd miles. It was a good apprenticeship, for he was taught Latin, French and Greek in addition to drug dispensing. The Bevans offered him a position in a new pharmacy business they were establishing in Notte Street, Plymouth. By 1735 he had become a partner, The business was renamed Bevan & Cookworthy. He married Miss Sarah Berry, and later he bought out his partners. His brother Philip joined him as partner and the business became Messrs William Cookworthy & Co, In 1768 he obtained a patent for 'Making porcelain from Moorstone, Growan and Growan Clay'. It gave him an exclusive right to use china clay and china stone for porcelain manufacture. Much controversy has existed over the location of Cookworthy's manufactory in Plymouth. Google with the Archive Organization has sponsored the digitisation of books from several libraries. The Internet Archive makes available, in its Community Texts Collection (originally known as Open Source Books), books that have been digitised by Google from a number of libraries. These are books on which copyright has expired, and are available free for educational and research use. This rare book was produced from a copy held by Princeton University Library, and is available from the Internet Archive.