2 WORKS ON SCIENCE AND NATURAL HISTORY — Continued. 
NEWTH, S. 
NATURAL PHILOSOPHY: an Introduction to the 
Study of Statics, Dynamics, Hydrostatics, Light, Heat, and Sound i 
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PERCY, JOHN. 
METALLURGY ; the Art of Extracting Metals from 
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Fuel, Wood, Peat, Coal, &c. 305. | Lead, and Part of Silver. 301-. 
Sii.VER and Gold. 30^. 
ROBERTS, R. D. 
AN INTRODUCTION TO MODERN GEOLOGY. 
By Dr. R. D. Roberts. W’ith Coloured Maps and Illustrations. 
Crown Svo. 5J. (University Extension Series.) 
SIEMENS, SIR WM. 
THE SCIENTIFIC WORKS OF SIR WM. SIEMENS : 
a Collection of Papers and Discourse.?. Edited by E. F. Bamber, 
C.E. Vol I. Heat and Metallurgy. 2. Electricity &c. 3. Addresses 
and Lectures. Plates. 3 vols. Svo. J2s . each. 
SIEMENS, WERNER. 
COLLECTED WORKS OF DR. WERNER VON 
SIEMENS. Translated by E. F. Bamber. Vol. i. Scientific Papers 
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Svo. 14.?. each. 
SMILES, DR. S. 
LIFE OF A SCOTCH GEOLOGIST AND BOTANIST 
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LIFE OF A SCOTCH NATURALIST (THOMAS 
EDWARD). By S. S.miles. Illustrations. Post Svo. 6 s . 
SOMERVILLE, MARY. 
CONNEXION OF THE PHYSICAL SCIENCES. 
By Mary Somerville. New Edition, revised. Plates. Post Svo. 9^ 
PHYSICAL GEOGRAPHY. By Mary Somerville. 
New Edition, revised by the Rev. J. Richardson. Portrait. Post 
Svo. Qj. 
THOMSON, J. A. 
THE STUDY OF ANIMAL LIFE. By J. Arthur 
Thomson. With many Illustrations. Crown Svo. Jr. (University- 
Extension Manuals.) 
WHYMPER, E. 
HOW TO USE THE ANEROID BAROMETER. 
By Edward Whymper. With numerous Tables. 2s . 6 d . net. 
JOHN MURRAY, Albemarle Street. 
