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action air-gap alternating currents ampere-turns amperes annealed apparatus arc lamp armature attraction battery bobbin calculate conductor construction copper copper wire cylindrical deflexion disk distance effect electric current electromagnet electromotive force employed Engineers equal exciting experiments exploring coil flat flow galvanometer given heat horse-shoe increase induction insulating inverse squares iron core law of inverse law of traction layer leakage length lines per square magnetic circuit magnetic field magnetic flux magnetic lines magnetic reluctance magnetizing force magnetizing power magnetomotive force measure mechanical motors needle netizing number of magnetic ohms permanent magnet permeability permeance piece of iron plunger polar surface pole pole-pieces produce proportional pull resistance ring round rule self-induction soft iron square centimetre square inch steel magnet Sturgeon Table telegraph temperature thick thin tube tubular coil turns unit weight winding wound wrought iron
Page 471 - Theorem—Division, Fractions, and Ratio—Continued Proportion—The Series and the Summation of the Series— Limit of Series—Square and Cube Roots—Equations—List of Formulae, etc. Spans' Dictionary of Engineering, Civil, Mechanical, Military, and Naval; with technical terms in French, German, Italian, and Spanish, 3100 pp., and nearly Sooo engravings, in super-royal Svo, in 8 divisions, 5/.
Page 466 - 6J. B 3 io CATALOGUE OF SCIENTIFIC BOOKS Perspective, Explained and Illustrated. By GS CLARKE, Capt RE With illustrations, 8vo, cloth, y. 6d. Practical Hydraulics ; a Series of Rules and Tables for the use of Engineers, etc., etc. By THOMAS Box. Ninth edition, numerous plates, post 8vo, cloth, 5
Page 468 - iS*. A Treatise on Ropemaking as practised in public and private Rope-yards, with a Description of the Manufacture, Rules, Tables of Weights, etc., adapted to the Trade, Shipping, Mining, Railways, Builders, etc. By R. CHAPMAN, formerly foreman to Messrs. Huddart and Co., Lime-house, and late Master Ropemaker to HM Dockyard, Deptford. Second edition, 12 mo, cloth, y.
Page 467 - Machinery for Prospecting, Excavating, Hauling, and Hoisting—Ventilation—Pumping— Treatment of Mineral Products, including Gold and Silver, Copper, Tin, and Lead, Iron. Coal, Sulphur, China Clay, Brick Earth, etc. Tables for Setting out Curves for Railways, Canals, Roads, etc., varying from a radius of five chains to three miles. By A. KENNEDY and RW HACKWOOD. Illustrated 321n0, cloth,
Page 460 - that in our opinion this little pocket-book of Hurst's is the very best of them all, without any exception, It would be useless to attempt a recapitulation of the contents, for it appears to contain almost compiled little book, which has received unqualified and deserved praise from every professional person to whom we have shown it."—
Page 475 - Health and Comfort in House Building; or, Ventilation with Warm Air by Self-acting Suction Power. With Review of the Mode of Calculating the Draught in Hot-air Flues, and with some Actual Experiments by J. DRYSDALE, MD, and JW HAYWARD, MD With plates and
Page 470 - will be given of the most recent arrangements of Horizontal, Vertical, Beam, Pumping, Winding, Portable, Semiportable, Corliss, Allen, Compound, and other similar Engines, by the most eminent Firms in Great Britain and America. The laws relating to the action and precautions to be observed in the construction of the various details, such as Cylinders,
Page 465 - The French- Polisher's Manual. By a FrenchPolisher; containing Timber Staining, Washing, Matching, Improving, Painting, Imitations, Directions for Staining, Sizing, Embodying, Smoothing, Spirit Varnishing, French-Polishing, Directions for Repolishing. Third edition, royal 321110, sewed, 6</. Hops, their Cultivation, Commerce, and Uses in various Countries. By PL SlMMONDS. Crown
Page 469 - by Simple Geometrical Construction, based upon the principles enunciated in Euclid's Elements, and comprising the various forms of Plain Slide-Valve and Expansion Gearing; together with Stephenson's, Gooch's, and Allan's Link-Motions, as applied either to reversing or to variable expansion combinations. By EDWARD J. COWLING WELCH, . Memb.
Page 466 - Gas, by Lewis Thompson, Esq.— Analyses of Gas—Influence of Atmospheric Pressure and Temperature on Gas—Residua] Products—Appendix—Description of Retort Settings, Buildings, etc., etc. The New Formula for Mean Velocity of Discharge of Rivers and Canals. By WR KUTTER. Translated from articles in the ' Cultur-Ingenieur,' by Lowis D'A. JACKSON, Assoc.