Anti-Cat Serum 



173 



III. Antisera for bloods of Carnivora. 



(1) Tests with Anti-Cat Serum. 



In my piper of 1, vn. 1901 (p. 381) I reported having failed to 

 obtain an anti-cat serum by treating rabbits in the usual manner by 

 intrapcritoneal injections with cat serum. The rabbits were treated 

 until they had received as many as 8 and 9 injections respectively, but 

 there was no appearance of precipitin. Two further attempts were 

 made which failed for the reason that a fresh cat serum was used for 

 continuing the treatment begun with old scrum, the fresh serum 

 proving toxic. Discouraged by these results, I made no further attempts 

 in this direction. Uhlenhuth (25, vn. 1901) was more successful, how- 

 ever. He does not state that he had any particular difficulty in 

 obtaining this antiserum. He tested it on the 24 bloods cited on 

 page 172, with the result that only cat serum dilutions were found to 

 react, the antiserum being obtained, as usual, from rabbits. Stimu- 

 lated by Uhlenhuth's success, I again made an effort to obtain anti-cat 

 serum, finally succeeding, although I only obtained a weak antiserum. 

 My results are summarized in the following table : 



Reactions 



74 PRIMATES 67 



27 CuiKoriEBA 27 



13 INSECTIVOKA 13 



92 CABNIVOBA 



19 Felidae (8 spec.) 2 



14 Viverridne (11 spec.) 



1 Proteleidae 



2 Hyaenidae (1 spec.) 



20 Canidae (14 spec. & ? races) 



4 Ursidae (3 spec. ) 3 



7 Procyonidae (5 spec.) 



19 Mustelidae (10 spec.) 



4 Pinnipedia (3 spec.) 



63 EODENTIA Gl 



73 UNOULATA 72 



2 CETACEA 



13 EDENTATA 12 



24 MARSOTIALIA 24 



1 MOSOTBEMATA 



324 AVES (incl. 4 eggs) 319 



41 EEPTIUA 41 



10 AMPHIBIA 10 



22 PISCES 22 



6 CRUSTACEA 6 



