Indice: Watt's life. Illustrations. Introduction. 1. From Glasgow to Birmingham 2. Prototype engines and patent act of 1775 3. Continuing trials and the first engines 4. Family and partners, 1774-1780s 5. Fair prospects in Cornwall 6. Development of the single-acting pumping engines and foreign patents 7. The financial struggle 8. Problems in Cornwall 9. Natural philosopher. Epilogue. Appendix 1: Specification of patent 913, 1769. Appendix 2: An account of James Watt's improvements upon the steam of fire engine, 1775. Appendix 3: Proposals to the adventurers. Short bibliography. Index people. Index places & subjects