THE OX AND ITS KINDRED 
eastern Asia, I have been anticipated by Dr. Conrad 
Keller, who enunciated the same view in his work 
entitled Die Abstammung der dltesten Haustieret 
published at Zurich in 1902. That two workers 
should have arrived independently at the same 
conclusion adds to the probability of its being 
true. 
The extinct wild ox and the domesticated breeds 
form the main theme of the book, which would, 
however, have been obviously incomplete without 
some account of existing wild cattle. Since, 
however, I have treated of these very fully in a 
larger work, the present notice is comparatively 
brief. Finally, hybrid cattle and extinct cattle form 
the respective subjects of two short chapters. 
To the Trustees of the British Museum and several 
friends and correspondents I am indebted for many 
of the illustrations in this volume, the sources of all 
of which are, I hope, duly acknowledged. 
R. LYDEKKER 
Harpenden Lodge, Herts 
November 191 1 
