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MATERIALS FOR THE STUDY OF VARIATION. Treated with especial 

 regard to Discontinuity in the Origin of Species. By WILLIAM BATESON, M.A., Fellow of St. 

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AMPHIOXUS AND THE ANCESTRY OF THE VERTEBRATES. By 



ARTHUR WILLEY, B.Sc., Tutor in Biology, Columbia College ; Balfour Student of the University 

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THE MYOLOGY OF THE RAVEN (Corvus corax Sinuatus). A Guide to the 

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ORGANIC EVOLUTION AS THE RESULT OF THE INHERITANCE OF 

 ACQUIRED CHARACTERS ACCORDING TO THE LAWS OF ORGANIC GROWTH. 

 By Dr. G. H. THEODOR EIMER, Professor of Zoology and Comparative Anatomy in Tubingen. 

 Translated by J. T. CUNNINGHAM, M.A., F.R.S.E., late Fellow of University College, Oxford. 

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FROM THE GREEKS TO DARWIN. An Outline of the Development of the 

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LESSONS IN ELEMENTARY BIOLOGY. By T. JEFFREY PARKER, B.Sc., 

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KEY TO NORTH AMERICAN BIRDS. Containing a concise account of every 

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 and United States boundary, inclusive of Greenland. Second Edition, with which are 

 incorporated General Ornithology an outline of the structure and classification of birds, and 

 Field Ornithology a 7nanual of collecting, preparing and preserving birds. By ELLIOTT COUES, 

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 Super Royal Svo. 42s. 



MONOGRAPH OF THE BRITISH CICADA OR TETTIGIID^ (Froghoppers 

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 of Philadelphia, Memb. de la Soc. Ent. de France. Illustrated by more than 400 Coloured 

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THE FOSSIL INSECTS OF NORTH AMERICA. With Notes on some 

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