TTie International Scientific /Scri^— (Continued.) 



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



Jevons, M. a., F. R. S. $1.75. 



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27. THE HUMAN SPECIES. By Professor A. de Quatrefages, Membre de 



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



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29. THE ATOMIC THEORY. By Professor A. Wubtz. Translated by E. 



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