6 
LESSONS IN ELEMENTARY PHYSICS. By Balfour 
STEWART, F.R.S., Professor of Natural Philosophy in Owens 
College, Manchester. With numerous Illustrations and Chromo- 
lithos of the Spectra of the Sun, Stars, and Nebulx. New 
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THE DEPTHS OF THE SEA: An Account of the General 
Results of the Dredging Cruises of H.M.SS. ‘‘ Porcupine” and 
‘*Lightning” during the Summers of 1868-69 and 70, under the 
scientific direction of Dr. Carpenter, F.R.S., J. Gwyn Jeffreys, 
F.R.S., and Dr. Wyville Thomson, F.R.S. By Dr. WYVILLE 
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and Plans. Second Edition. Royal 8vo. cloth, gilt. 315. 62. 
OLD-FASHIONED ETHICS, AND COMMON-SENSE 
METAPHYSICS, with some of their Applications. By W1LL1AM 
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CONTRIBUTIONS TO THE THEORY OF NATURAL 
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Wa .tuace, Author of ‘* The Malay Archipelago.” &c. Second 
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CALIBAN: THE MISSING LINK. By Daniel Wilson, 
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FORCE AND NATURE: ATTRACTION AND RE- 
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A HISTORY OF CHEMICAL THEORY, from the Age of 
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MACMILLAN & CO. LONDON. 
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