422 



ZOOLOGY 



Originof 



Photograph by E. R. Sanborn, N. Y. Zoiil. Soc. 

 FIG. 197. Przewalski wild horse (Equus przcvalskii). 



rather short hair basally, though ending in a long tuft. 

 The general color is dun, and there is a distinct stripe 

 down the back, while shoulder stripes and barring on the 

 upper parts of the legs may frequently be observed. It 

 is an interesting fact that these same markings may 

 often be found on broncho ponies of the southwestern 

 United States, derived from the old Spanish stock which 

 formerly ran wild. 



J . The domestic horse was named by Linnaeus Equus 

 caballus (from caballus, an old name for the horse, per- 

 petuated today in the Spanish caballo; note also cabal- 

 lero, a gentleman, i.e., a man who rides a horse). It did 

 not occur to Linnaeus that more than one species was 

 involved, but, as in the case of dogs and cats, it appears 

 that the domesticated animal is derived through cross- 

 ing from two or more originally wild forms. Evidence 

 of this is found in the prehistoric drawings on the walls 

 of caves in France and Spain, made by the Cro-Magnon 

 man. These drawings, while not very exact, are clever 



