Note: Project Gutenberg also has an HTML version of this file which includes the original illustrations. See 46634-h.htm or 46634-h.zip: (http://www.gutenberg.org/files/46634/46634-h/46634-h.htm) or (http://www.gutenberg.org/files/46634/46634-h.zip) Images of the original pages are available through Internet Archive. See https://archive.org/details/lifeofrichardtre02trevrich LIFE OF RICHARD TREVITHICK, With an Account of His Inventions. by FRANCIS TREVITHICK, C.E. Illustrated with Engravings on Wood by W. J. Welch. VOLUME II. London: E. & F. N. Spon, 48, Charing Cross. New York: 446, Broome Street. 1872. London: Printed by William Clowes and Sons, Duke Street, Stamford Street and Charing Cross. CONTENTS OF VOLUME II. CHAPTER XVII. VARIOUS INVENTIONS. Stone-crushing mill, 1804--Portable puffer, 1805--Staffordshire potteries--Engine for South America--Diversity of steam appliance--Numerous high-pressure engines--West India Dock locomotive--Engines at Newcastle--Blacklead lubricator--Engines in Wales--Mine engines on wheels, 1804--Engines in London--Engines to be sold in market towns--Blast-furnaces--Aërated steam-boiler--St. Ives Breakwater--Dolcoath blast copper furnace--Davies Gilbert's opinion of the aërated steam-boiler--Trevithick's advice to a brewer--Agricultural engines--West India engines--Thrashing engine--Horizontal engines--Expansive steam--Cold surface condenser--Air-pump--Expansive cam--Fire-bars--Comparison with Watt's engine--Stone-boring engine, 1813--Plymouth Breakwater, reduction in cost--Locomotive engine, 1813--Stone splitting--New method of stone boring, 1813--Screw bit, 1813--Falmouth Harbour--Exeter Bridge--Engine at Lima--Proposed train from Buenos Ayres to Lima--West India portable engine Page 1-35 CHAPTER XVIII. AGRICULTURAL ENGINES; LOSS OF PAPERS. Sir Christopher Hawkins's thrashing machine, 1812--Report of three wise men--Cost of horse and steam power--Wheal Liberty engine--Sir John Sinclair and the Board of Agriculture--Cost of engine--Power of engine--Welsh locomotive--Trevithick on steam agriculture--West Indies engine--Horse-power--Trevithick on patents--Engines in charge of labourers--Teapot--Detail of agricultural engine--Lord Dedunstanville's thrashing machine--Plymouth Breakwater locomotive--Wheal Prosper engine--Wheal Alfred engine--Steam-plough--Cultivation of commons--Combined steam-tormentor, narrower, and shoveller--Mr. Rendal's thrashing machine--Cost and work performed by thrashing engines--Their durability--Bridgenorth engine--Trevithick's drawings light the tires 36-68 CHAPTER XIX. POLE STEAM-ENGINE.