Chap, v.] ANALOGOUS VARIATIONS. 



201 



heavy Belgian cart-horse, Welsh ponies, Norwegian cohs, 

 the lanky Kattywar race, &c., inhabiting the most dis- 

 tant parts of the world, should all have been. crossed 

 with one supposed aboriginal stock. 



Now let us turn to the effects of crossing the several 

 species of the horse-genus. EoUin asserts, that the com- 

 mon mule from the ass and horse is particularly apt to 

 have bars on its legs; according to Mr. Gosse, in certain 

 parts of the United States about nine out of ten mules 

 have striped legs. I once saw a mule with its legs so 

 much striped that any one might have thought that it 

 was a hybrid-zebra; and Mr. W. C. Martin, in his excel- 

 lent treatise on the horse, has given a figure of a similar 

 mule. In four coloured drawings, which I have seen, 

 of hybrids between the ass and zebra, the legs were much 

 more plainly barred than the rest of the body; and in 

 one of them there was a double shoulder-stripe. In 

 Lord Morton's famous hybrid, from a chestnut mare 

 and male quagga, the hybrid, and even the pure off- 

 spring subsequently produced from the same mare by a 

 black Arabian sire, were much more plainly barred 

 across the legs than is even the pure quagga. Lastly, 

 and this is another most remarkable case, a hybrid has 

 been figured by Dr. Gray (and he informs me that he 

 knows of a second case) from the ass and the hemio- 

 nus; and this hybrid, though the ass only o.ccasionally 

 has stripes on its legs and the hemionus has none and 

 has not even a shoulder-stripe, nevertheless had all four 

 legs barred, and had three short shoulder-stripes, like 

 those on the dun Devonshire and Welsh ponies, and 

 even had some zebra-like stripes on the sides of its 

 face. With respect to this last fact, I was so con- 



