216 Tests with Precipitins 



(b) Perissodactyla. 



4. Tests with Anti-equine sera. 



These tests were conducted with three antisera for the bloods of the 

 horse (790 tests), donkey (94 tests), and zebra (94 tests). The antisera 

 only gave maximum reactions with equine bloods, slight reactions only 

 with bloods of some Artiodactyla and Cetacea. (Time limit.) 



V. Tests with Anti-Cetacean Serum. 



Anti-whale serum, tested on 94 bloods, gave a maximum reaction 

 only with cetacean bloods, slight reactions with those of Pecora and 

 Suina, and some faint cloudings with those of other Mammalia. 



VI. Tests with Anti-Marsupial Serum. 



A weak anti-wallaby serum, tested on 691 bloods, showed a close 

 relationship amongst Marsupialia, exclusive of the carnivorous Thy- 

 lacine. Only a few other bloods gave slight reactions. 



VII. Tests ivith Anti- Avian Sera. 



1. Tests were made by means of antisera for the blood of the 

 fowl and ostrich upon 792 and 649 bloods respectively. They 

 demonstrated a similarity in the blood constitution of all birds, which 

 was in sharp contrast to what had been observed with mammalian 

 bloods when acted upon by anti-mammalian sera. Differences in the 

 degree of reaction were observed, but did not permit of drawing any 

 conclusions. Slight or faint reactions were observed with some 

 reptilian bloods ; only a very few mammalian bloods (0 / and 0'6 / 

 respectively) showed faint reactions. 



2. Tests made with antisera for egg-white of the fowl (789 tests) 

 and emu (630 tests) gave maximum reactions with the egg-white of 

 birds, moderate reactions with avian bloods, and distinct but slight 

 reactions with reptilian bloods, notably those of Crocodilia and Chelonia. 



VIII. Tests with Anti- Reptilian Sera. 



Two antisera were used, the one for the blood of Chelonia (666 tests), 

 the other for Alligator (468 tests). The first produced maximum 

 reactions with chelonian bloods, lesser reactions with crocodilian, and 

 slight reactions with avian egg-whites. The anti-alligator serum 

 produced maximum reactions with Crocodilia, followed by Chelonia, 

 avian egg-whites, and least with avian bloods. (See also Section VIII.) 



