TELEOONY AND REVERSION. 69 



difficult to prove that this hybrid was not indebted to its 

 ancestors on the female side of the house for all the stripes 

 it possessed. 



In the filly — the second foal of Lord Morton's mare — 

 faint stripes are shown by Agasse across the fore-leg 

 between the elbow and knee^ and across the hind leg above 

 and below the hock. On the neck there are seven stripes, 

 and there are eight stripes across the body behind the 

 shoulder-sti'ipe, which vary considerably in length (Fig. 15). 

 There are thus quite twice the number of stripes on the 

 neck and body of the filly that are shown in the hybrid, and, 

 unlike the quagga (Fig. 13), the filly has stripes on both the 

 fore and hind limbs. In the colt Agasse represents a broad 

 shoulder-band which looks as if it consisted of two or 

 more stripes. In front of this band there are several 

 (eight or nine) stripes on the neck, while behind the 

 shoulder-stripe there are others extending nearly to the 

 loins — twelve quite distinct and two doubtful. I noted 

 also five faint markings across the fore-leg above the knee, 

 and two equally obscure markings across the hind leg 

 above the hock. In the fourth foal of Lord Morton's 

 mare (which, like the second and third, had for his sire Sir 

 Gore Ouseley's black Arabian horse) I detected in Agasse's 

 sketch eight stripes in all, three very faint stripes in front 

 of, and four behind, the shoulder-stripe. 



Weismann points out in reference to the stripes on the 

 subsequent foals of Lord Morton's mare that similar stripes 

 are "not very uncommon on piirely bred foals, and ordi- 

 nai'ily disappear as the animal grows older." I have seen 

 eleven pairs of stripes on a Shetland foal, and Darwin, as 

 already stated, bred a foal marked by numerous narrow 

 stripes, some of them as far back as the croup. Neverthe- 

 less I am not sure that Weismann, in saying that stripes 

 such as Agasse shows in the two-year-old colt are " not very 

 uncommon on purely bied foals," gives a sufficient and 

 final answer. While stripes at birth may be accounted 

 for in some cases by saying they are simple relics of 

 ancestral markings, it does not necessarily follow that they 



