THE 



NATURALIST'S LIBRARY. 



EDITED BY 



SIR WILLIAM JARDINE, BART. 



F.R.S.E., F.L.S., ETC. ETC. 



VOL. XX. 



Mammalia. 



HORSES. 

 BY LIEUT.-COL. CHARLES HAMILTON SMITH, 



K.H. AND K.W., F.R. AND L.S., PRESIDENT OF THE DEVON 



ETC. ETC. 



CHATTO & WINDUS, PICCADILLY. 



