102 THE HORSE AND ITS RELATIVES 



from the Grottes de Grimaldi, in Monaco, the 

 remains of a large form of horse, which he identifies 

 with the existing Equus caballus, but to which, 

 very judiciously, he does not assign a separate 

 racial name. This Prehistoric horse approaches 

 the modern Percheron breed, to which it may have 

 been ancestral. Bones and teeth indicating horses 

 of equally large size have been obtained from the 

 Brighton " elephant-bed." 



From this long and somewhat wearisome survey 

 of recent views in regard to the Prehistoric horses 

 of Western Europe, which is essential in order to 

 arrive at a satisfactory conclusion as to the syste- 

 matic place of the Mongolian tarpan, it will be 

 evident that during the period in question there 

 were several more or less distinct types of wild 

 European horses, differing from one another in 

 bodily size, in the relative breadth of the skull, the 

 degree of slenderness or stoutness of the cannon- 

 bones, in the width of the hoofs, and to some degree 

 perhaps in the conformation of the cheek-teeth. 

 Some naturalists regard these different forms or at 

 all events a few of them as distinct species ; but 

 by Messrs. Duerst and Boule they appear to be all 

 considered as races, or phases, of the species typified 

 by the domesticated Equus caballus a view in 

 which I myself fully concur. These races are not, 

 however, precisely comparable to the geographical 

 races of existing mammals recognised by modern 



