LAWS OF VARIATION 227 



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 colored drawings, which I have seen, of 

 hybrids between the ass and zebra, the legs were much 

 more plainly barred than the rest of the bod}'; 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 subse- 

 quently produced from the same mare by a black Ara- 

 bian sire, were much more plainly barred across the legs 

 than is even the pure quagga. Lastly, and this is an- 

 other 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 that not even a 

 stripe of color appears from what is commonly called 

 chance, that I was led solelv from the occurrence of the 

 face-stripes on this hybrid from the ass and hemionus to 

 ask Colonel Poole whether such face-stripes ever occurred 

 in the eminently striped Kattywar breed of horses, and 

 was, as we have seen, answered in the affirmative. 



What now are we to say to these several facts ? We 



