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I. FORMS OF WATEK, in Clouds, Kain, Kivers, Ice, and Glaciers. By Prof. 



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III. FOODS. By Edward Smith, M. D., LL. B., F. K. S. $1.75. 



IV. MIND AND BODY. By Alexander Bain, LL. D. $1.50. 



V. THE STUDY OF SOCIOLOGY. By Herbert Spencer. $1.50. 

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 VIL THE CONSERVATION OF ENERGY. By Prof. Bai.foue Stewart, 



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 XII. THE HISTORY OF THE CONFLICT BETWEEN RELIGION AND 

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XIII. THE DOCTRINE OF DESCENT, AND DARWINISM. By Prof. Oscar 



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XIV. THE CHEMISTRY' OF LIGHT AND PHOTOGRAPHY : In its Applica- 



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 XV. FUNGI; their Nature, Influence, and Uses. ByM. C. Cooke, LL.D. Ed- 

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 XVI. THE LIFE AND GROWTH OP LANGUAGE. By Prof. W. D. Whit- 

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 XVIL MONEY AND THE MECHANISM OF EXCHANGE. By W. Stanley 



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 XVIII. THE NATURE OF LIGHT, with a General Account of Physical Optics. 

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 XIX. ANIMAL PARASITES AND MESSMATES. By M. Van Beneden, Pro- 

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 XXI. THE FIVE SENSES OF MAN. By Julius Bernstein, O. O. Professor in 

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 XXin. STUDIES IN SPECTRUM ANALYSIS. By J. Norman Lockyeb. Illus- 

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 XXIV. A HISTORY OF THE GROWTH OF THE STEAM-ENGINE. By 

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 XXV. EDUCATION AS A SCIENCE. By Alexander Bain, LL. D., Professor 

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