Gas Engine, Andrews, 41 ” Atkinson, 57 ” Baldwin, 33 ” Bénier, 26 ” Benz, 31 ” Bisschop, 24 ” Cadiot, 63 ” Campbell, 34 ” Charon, 59 ” Compagnie Parisienne, 61 ” Crossley, 47 ” Cuinat, 55 ” Dugald-Clerk, 29 ” Economic, 28 ” Fielding, 42 ” Forest, 27, 53 ” François, 25 ” Griffin, 65 ” H. C., 63 ” Koerting-Lieckfeld, 39 ” Lablin, 45 ” Lenoir, 23, 38 ” Lentz, 28 ” Letombe, 62 ” Martini, 45 ” Midland, 34 ” National, 51 ” Niel, 44 ” Noël, 56 ” Otto, 35 ” Pygmée, 49 ” Richardson and Norris, 63 ” Robuste, 62 ” Roger, 61 ” Rollason, 65 ” Simplex, 121 ” Stockport, 31 ” Tenting, 57, 71 Gas-producer, Bénier, 115, 126 ” Gardie, 112 ” Kitson, 118 ” Loomis, 118 ” Taylor, 113 ” Taylor-Wimand, 117 ” Wilson, 119 History of Gas Engine, 1 Longsden process, 119 Lowe ” 105 Maintenance of Gas Engines, 131 Otto Cycle, 8 Oil Engine, Brayton, 77 ” Campbell, 82 ” Capitaine, 85 ” Crossley-Holt, 98 ” Griffin, 100 ” Grob, 82 ” Hornsby-Akroyd, 90 ” Knight, 98 ” Koerting-Boulet, 97 ” Merlin, 89 ” Niel, 101 ” Priestman, 79 ” Ragot, 94 ” Root, 95 ” Sécurité, 79 ” Trusty, 99 ” Vulcan, 93 Siemens Gas, 107 Strong process, 105 Working Principles of Gas Engine, 13 _Richard Clay & Sons, Limited, London & Bungay._ _Pott 8vo, limp roan, gilt edges, 5s._ WHITTAKER’S MECHANICAL ENGINEER’S POCKET-BOOK BY PHILIP R. BJÖRLING. CONTENTS. WATER—WIND ENGINES—AIR—STEAM—MANUAL POWER—ANIMAL POWER—PIPES—TANKS—CRABS, WINCHES AND CRANES—GEARING—ROPE DRIVING—BELTING—SHAFTING—BEAMS—GRAVITY OF FALLING BODIES—ACCELERATED MOTION—CENTRIFUGAL FORCE—PENDULUM—THERMOMETERS—MINING MACHINERY—HYDRAULIC GOLD MINING—ELEVATORS, CONVEYERS AND PICKING TABLES—CHAIN BELTING—CENTRIFUGAL FANS—SPEEDS OF MACHINERY AND TOOLS—TABLES. ‘It contains information not often found in similar works.’—_English Mechanic._ ‘The book is evidently framed with a thorough appreciation of the most modern needs of the engineer.’—_Marine Engineer._ ‘There is little that any mechanical engineer is likely to require to be informed on—as to formulæ and data—that is not afforded in greater or lesser degree by the pages of this pocket-book.’—_Electrician._ ‘Literally packed with concrete data on all matters connected with practice of mechanical engineering, and every engineer will be much the better practical craftsman in having the work constantly at hand.’—_Building Industries._ ‘We welcome it as a valuable _vade mecum_ to the engineer be he mechanical or civil.’—_Indian and Eastern Engineer._ _With 112 Illustrations. Cr. 8vo, 250 pp., 5s._