Chemical Basis of Genus and Species 57 



be illustrated by the following table from Nuttall. 

 The antiserum used for the precipitin reaction was 

 obtained by treating a rabbit with human blood serum. 

 The forty-five bloods tested had been preserved for 

 various lengths of time in the refrigerator with the 

 addition of a small amount of chloroform. 



TABLE II 



Quantitative Tests with Anti-Primate Sera 



Tests with Antihuman Serum 



Blood of 



Primates 



Man 



Chimpanzee 



Gorilla 



Ourang 



Cynocephalus mormon 



Cynocephalus sphinx. . 



Ateles geofifroyi 



Jnsectivora 



Centetes ecaudatus 



Carnivora 



Canis aureus 



Canis familiaris 



Lutra vulgaris 



Ursus tibetanus 



Genetta tigrina 



Felis domesticus 



Felis caracal 



Felis tigris 



Ungulata 



Ox 



Sheep 



Cobus unctuosus 



Cervus porcinus 



Rangifer tarandus 



Capra negaceros 



Equus caballus 



Sus scrofa 



