214 Tests with Precipitins 



Note regarding the Classification of Animals adopted in the Tables. 



As will be seen., the bloods tested have been ordered according to 

 the zoological classification of the animals which yielded them. For the 

 Mammalia, I have followed Flower and Lydekker ; for Birds, see Evans ; 

 for Reptilia and Amphibia, see Gadow ; for Fishes, see Giinther ; for 

 Crustacea, see Glaus : the works referred to being as follows : — 



Flower, W. H., and Lydekker, R. (1891). An Introduction to the Study of Mammals, 



Living and Extinct. (London : Adam and Charles Black.) 

 Evans, A. H. (1899). Birds. The Cambridge Natural History, vol. ix. (London : 



Macmillan and Co., Limited.) 

 Gadow, H. (1901). Amphibia and Reptiles. Ihid. vol. viii. 

 GiJNTHER, A. C. (1880). An Introduction to the Study of Fishes. (Edinburgh : Adam 



and Charles Black.) 

 Claus, C. (1887). Lehrhuch der Zoologie. (Marburg and Leipzig : Elwert'sche 



Buchhandlung.) 



On several occasions, when in doubt, recourse was had to the British 

 Museum Catalogue. 



General Summary of the Results of 16,000 Precipitin-Tests 

 conducted by g. h. f. nuttall. 



I. Tests with Anti-Primate Sera. 



These tests were conducted by means of antisera for man (825 tests), 

 chimpanzee (47 tests), ourang (81 tests), Cercopithecus (733 tests). 

 Maximum reactions were only obtained with bloods of Primates. The 

 degrees of reaction obtained indicate a close relationship between the 

 Hominidae and Simiidae, a more distant relationship with the Cercopi- 

 thecidae, the bloods of Cebidae and Hapalidae giving still smaller 

 reactions than the last, when we consider the results obtained with 

 the first three antisera. The tests with antiserum for Cercopithecus 

 gave the largest reactions with bloods of Gercopithecidae, next with 

 those of Hominidae and Simiidae, but slight reactions with those of 

 Cebidae and Hapalidae. All four antisera failed to produce reactions 

 with the two bloods of Lemuridae tested, except when sufficiently 

 powerful to also produce reactions with other mammalian bloods. From 

 this we may conclude that the Lemurs properly belong to an Order 

 separate from the other Primates. 



