Anti-Human Serum 



165 



Layton (1903, pp. 219, 220) has treated rabbits according to Uhlen- 

 huth's method and produced anti-human serum. He tested 28 bloods 

 (species not stated) and was able to identify human and exclude monkey 

 blood 1 . 



825 Tests with Anti-Human Serum. 



The following tests were carried out by means of 5 different anti- 

 liuman sera obtained by treating rabbits with the blood of Europeans. 

 All the sera were powerful, being freshly prepared in succession, so that 

 when the one began to weaken another was substituted 8 . 



Reactions 



97 PRIMATES 



Anthropoidea 



34 Human (4 races) . 3 (8 "/) 7 (21 %} 



8 Simiidae (3 species) 

 36 Cercopithecidae 



(26 species) 3 26(72,,) 3(8 ) 



13 Cebidae (9 species) 3 2 (15 %) 5 (38 ) 3 (23 ) 



4 Hapalidae (3 spec.) 21 1 

 Lemuroidea 



2 Lernuridae (2 spec.) 2 



29 CHIROFTERA 26 3(10,,) 



15 INSECTIVORA 13 2(13,,) 



97 CARNIVORA 70 13(13,,) 14(14,,) 



65KODENTIA 53 7(11,,) 5(7 ) 



70 UNQULATA 40 19(27,,) 11(16,,) 



3 CETACEA 3(100/ ) 



13EDENTATA 12 1(7 ) 



26 MARSUPIALIA 25 1 (4 ) 



1 MoNOTREMATA 1 



320AVES 319 l(-3 ) 



49 REPTILIA 49 



14 AMPHIBIA 14 



19 PISCES 19 



7 CRCSTACEA . 7 



34 (71 



8 



100 



4 (10 ) 92 

 78 

 50 







10' 



13 



27 



18 



43 



100 



7 



4 







03 

 

 

 

 



2/o 



The preceding table shows maximum reactions only amongst 

 the Hominidae, Simiidae, and Cercopithecidae. In the case of the 

 last only 4 bloods gave a maximum reaction, in two the precipitum 

 was moderate in quantity, in two it was voluminous, in fact almost 

 equal in quantity to that observed in the reactions with human 



1 Layton added -5 c / carbolic acid to his antiserum. 



2 See p. 144 regarding the strength of antisera. 



