Anti-Zebra Serum 



197 



(11) 94 Tests tuith Anti-Zebra Serum. 



These tests were all made on one day with one antiserum obtained 

 from a rabbit treated with the serum of Equus greyvi Gunther, Grevy's 

 zebra, which died at the Zoological Society's Gardens, London. This 

 antiserum was moderately powerful, giving a precipitum of '012 c.c. Avith 

 its homologous blood. 



Note. A number of the tests here recorded are not included in the 

 tables at the end. The footnote to the preceding tests with anti-donkey 

 serum applies also to these bloods. In addition, the three tests with 

 anti-zebra serum upon the 3 cetacean blood-samples are not included 

 in the tables. 



The close relationship existing between Equus caballus and a 

 species of zebra {Equus hurchelli) has been demonstrated by crossmg. 



