C'ONTKX'IS 

 Pakt I. Evolution oi- tiih IIousk in N \iritK 



Inthodictiox <» 



Fossil Horsks of the A(iK of Man Ij 



t^voLUTiox of the Hokse 11 



Four-toed Horses 11 



Three-toed Horses 17 



One-toed Horses _'_' 



Conclusions _':; 



Meaning of the Change in P'eet and Teeth _'t. 



Cause of the Evolution ;;j 



Parallel Evolution in Other Races ;;;; 



Part II. The Horse under Domestication 



Origin of the Domestic Horse .30 



CpMP.AJRISON OF the SKELETON OF HORSE AND MaN 41 



The Draft Horse 41 



Development of Great Size in the Draft Horse }:! 



The Shetland Pony 4:; 



The Arabian Horse H 



The Race Horse I"> 



The Teeth of the Horse 1^ 



Structure of the Teeth t"^ 



Wear and Compensating Movement of the Incisors •')<• 



Designation of the Teeth •">- 



Wolf Tooth of the Horse •"• » 



Premolars and Molars of the Horse •' * 



Eruption of the Teeth of the Horse '"•" 



Shedding the Teeth ''-' 



Principal Literature in the Evolution of the Horse ''' 



Index '•' 



