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1. FORMS OF WATKR. 15v Prof. John Tynd all. ^\M. 



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(5. THE NEW CHEMISTRY. By Prof. Josiau P. Cooke, Jr., of Harvard Uni- 

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8. ANIMAL LOCOMOTION: with a Dissertation on Aeronautics. By J. B. Pktti- 

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9. RESPONSIBILITY IN MENTAL DISEASE. Bv H. MArosLEY, M. D. |L50. 



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11. ANIMAL MECHANISM. A T realise on Terrestrial and Aerial locomotion. By 

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13. THE DOCTRINE OF DESCENT, AND DARV/INISM. By Prof. Oscak 

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14. THE CHEMISTRY OF LIGHT AND PHOTOGRAPHY. By Dr. Hermann 

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15. FUNGI; their Nature, Influence, and Uses. By M. C. Cooke, LL. D. Edited 

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16. THE LIFE AND GROWTH OF LANGUAGE. By Prof. W. D. Whitney, of 

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17. MONFY AND THE MECHANISM OF EXCHANGE. By W. Stanley 

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18. THE NATURE OF LIGHT. By Dr. E. Lommel. 88 Illustrations and a Plate 

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19. ANIMAL P.\RAS1TES ANl) MESSMATES. By M. Van Beneden, Professor 

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20. ON FERMENTATIONS. By P. Schutzexbergei:. Director at the Chemical 

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21. THE FIVE SENSES OF MAN. By J. Bernstein, O. O. Professor in the Uni- 

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22. THE THEORY OF SOUND IN ITS RELATION 10 MUSIC. By Prof. 

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24. A HISTORY OF THE GROWTH OF THE STE.\M-ENGINE. Bv Robert 

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25. EDIK'AITON AS A SCIENCE. By Ale.v. Bain, LL. I). $1.75. 

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28. THE CRAYFISH: An Introduction to the Study of Zoology. By Prof. T. H. 

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29. THE ATOMIC THEORY^ By Ad. Wuktz, Mombre do Tlnstitut, etc. Trans- 

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30. ANIM.\L LIFE AS AFFECTED BY" THE NATURAL CONDITIONS OF 

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31. SIGHT : An Exposition of the Principles of Monocular and Binocular Vision. By 

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