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BIOLOGY AND ZOOLOGY. 



MATERIALS FOR THE STUDY OF VARIATION. Treated with 

 especial regard to Discontinuity in the Origin of Species. By William Bateson, 

 M. A., Follow of St. John's College, Cambridge. 8vo. 21s.net. 



AMI'HIOXUS AND THE ANCESTRY OF THE VERTEBRATES. 



By Arthur Willey, B.Sc, Tutor in Biology, Columbia College ; Balfour Student 

 of the University of Cambridge. With a preface by Henry Fairfield Osborh. 

 8vo. 10s. Cd. net. 



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

 to the Study of the Muscular System in Birds. By R. W. Siiufeldt, of the 

 Smithsonian Institute, Washington, U.S.A. With Illustrations. 8vo. ISs. net. 



ORGANIC EVOLUTION AS THE RESULT OF THE INHERITANCE 



OF ACQUIRED CHARACTERS ACCORDING TO TUB LAWS OF ORGANIC 

 GROWTH. By Dr. G. II. Tbeodor Eimer, Professor of Zoology and Comparative 

 Anatomy in Tubingen. Translated by J. T. Cunniniiiiam, M.A., F.R.S.E., late 

 Fellow of University College, Oxford. 8vo. 12s. Od. 



FROM THE GREEKS TO DARWIN. An Outline of the Development 

 of the Evolution Idea. By Henry Fairfield Osborn, Sc.D., Da Costa Professor 

 of Biology in Columbia College, Curator in the American Museum of Natural 

 History. 8vo. 9s. not. 



LESSONS IN ELEMENTARY BIOLOGY. By T. Jeffkey Parkeu, 

 B.Sc, F.R.S., Professor of Biology in the University of Otago, Now Zealand. 

 Illustrated. Second Edition. Crown 8vo. 10s. (id. 



KEY TO NORTH AMERICAN BIRDS. Containing a concise account 



of every species ,of living and fossil bird at present known from the continent 

 north of the Moxican and United States boundary, inclusivo of Greenland. 

 Second Edition, with which are incorporated General Ornithology— an nutlino of 

 the structure and classification of birds, and Field Ornithology— a manual of 

 collecting, preparing and preserving birds. By Elliott Coufs. M.A., M.D., 

 Ph.D., Member of the National Academy of Sciences. Profusely illustrated. 

 Super Royal Svo. 42s. 



MONOGRAPH OF THE BRITISH CICADiE OR TETTIGIID7E 



(Froghoppers and Grassflics). By GEOROE Bowdler BuOKTOK, F.R.S., Corr. 

 Memb. Acad. Nat. Hist, of Philadelphia, Memb. do la Soc. Ent. de France. 

 Illustrated by more than 400 Coloured Drawings. Two Vols. Demy Svo. 38s. Od. 

 each net. Also in Eight Parts. Ss. each net. 



THE FOSSIL INSECTS OF NORTH AMERICA. With Notes on 

 some European Species. By Samuel H. Scuddkr. Vol. 1. The Pretertiary 

 Insects. With 34 Plates. Vol. II. The Tertiary Insects. With a Map and 2S 

 Plates. 4to. Paper Boards. 00s. net. 



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