Mendel's Principles of Heredity. By w. Bateson, 



M.A\, F.E.S., V.M.H., Director of the John Innes Horticultural 

 Institution. Third impression, with additions. With 3 portraits, 

 6 coloured plates, and 38 illustrations in the text. Eoyal 8vo. 

 12s net. 



The Vertebrate Skeleton : New Edition. By 



Sidney H. Eeynolds, M.A., Professor of Geology in the Uni- 

 versity of Bristol. Second edition. With 144 illustrations. 

 Demy 8vo. 15s net. Cambridge Zoological Series. 



American Permian Vertebrates. By Samuel w. 



Williston, Professor of Palaeontology in the University of 

 Chicago. With frontispiece, 38 plates, and 32 illustrations in 

 the text. 8vo. 10s net. University of Chicago Press. 



The Mechanistic Conception of Life. Biological 



Essays by Jacques Loeb, M.D., Ph.D., Sc.D., Head of the 

 Department of Experimental Biology, Eockefeller Institute for 

 Medical Research. With 58 illustrations and diagrams. 12 mo. 

 6s net. 



London Cambridge University Press Fetter Lane 



Pp. 142, Cloth, Demy 8vo, Price 5s. net., postage id. 



Practical Bird-Keeping 



Being reprints from ' Avicultural Magazine,' 1911-12. 



Edited by 



J, L. BONHOTE, M.A., FX.S., F.Z.S. 



©, A Manual intended as a practical help to those who find 

 both pleasure and profit from the keeping of wild birds in 

 confinement. Contributed to by specialists in each class of birds 

 described . 



Ct, With one Coloured Plate, and sixteen uncoloured. 



LONDON: WEST, NEWMAN & CO., 54, Hatton Garden, E.C. 



