WEISBACH y HERRMANN: The Mechanics of Hoisting Machinery, including Accumulators, Excavators, and Pile-Drivers. A Text-Book for Technical Schools, and a Guide for Practical Engineers. By Dr. Julius Weisbach and Professor Gustav Herrmann. Authorized Translation from the Second German Edition. By Karl P. Dahlstrom, M.E., Instructor of Mechanical Engineering in the Lehigh University. With 177 Illustrations. $3.75.
ZIWET: Tratado elemental de mecánica teórica. En tres partes: Cinemática, Estática y Dinámica. Por Alexander Ziwet, Universidad de Míchigan.
Part I. $2.25. Part II. $2.25. Part III. (En preparación.)
FÍSICA.
AIRY. Obras de Sir G. B. Airy, K.C.B., antiguo Astrónomo Real.
Sound and Atmospheric Vibrations. With the Mathematical Elements of Music. Designed for the Use of Students in the University. Second Edition, Revised and Enlarged. 12mo. $2.50.
. An Elementary Explanation of the Principal Perturbations in the Solar System. New Edition. 12mo. $1.90.
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CLAUSIUS: Mechanical Theory of Heat. By R. Clausius. Translated by Walter R. Browne, M.A. 12mo. $2.60.
DANIELL: A Text-Book of the Principles of Physics. By Alfred Daniell, D.Sc. Illustrated. New Edition, Revised and Enlarged. 8vo. $3.50.
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DONKIN (W. F.): Acoustics. Second Edition. 12mo. $1.90.
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