Chap. V.] ANALOGOUS VARIATIONS. 201 



the heavy Belgian cart-horse, Welsh ponies, Norwegian 

 cobs, the lanky Kattywar race, &c, inhabiting the most 

 distant 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. Eollin asserts, that the 

 common 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 excellent 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 offspring 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 hemionus ; 

 and this hybrid, though the ass only occasionally has 

 stripes on his 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 convinced 



