184 NATURAL HISTORY ESSAYS 



is obviously a male, from the richness and extent 

 of the markings, which differ materially from the 

 paler ornamentations of the female, as shown in 

 York's photograph. Zwecker has drawn the animal 

 well enough, but the surrounding bush seems 

 far too luxuriant, and the water scene does not 

 suggest a pool on the open veldt, as delineated 

 by Harris. An enlarged copy of one of York's 

 photographs of the female now hangs in the new 

 zebra house at the Zoo.^ 



II, 12. The thirteenth Earl of Derby had a 

 pair of quaggas living in his famous menagerie at 

 Knowsley Hall. The male seems to have been 

 the individual mentioned by Darwin as being 

 striped about the hocks — a unique occurrence in 

 this species, indicating an approach to the zebra 

 type of ornamentation. It appears to have died at 

 Knowsley, for on the sale of the menagerie 

 after the death of Lord Derby in 1851, only the 

 female animal is mentioned in the catalogue which 

 was issued by Mr. J. C. Stevens. This quagga 

 mare was purchased for ^50 by the late Dr. G. F. 

 Westerman, and was sent to the Amsterdam Zoo- 

 logical Gardens, where she gave birth to an 

 equine hybrid (Asiatic wild ass x quagga). 



13. The Berlin Zoological Gardens once pos- 



1 This photograph has been published as a lantern slide, and was 

 included in the series of lantern photographs illustrating my lecture 

 on the "Vanishing African Fauna," before the Selborne Society in 

 1899. The animal is in a standing position, apparently basking in 

 the sun, and the characteristic half-striping is well shown. 



