A nti-Hummi Serimi 



163 



rabbits with human albuminous urine, pleuritic exudation, and blood 

 serum, injecting quantities of 10 c.c. every 3 to 4 days. He tested 

 his antiserum on only four other bloods (rabbit, guinea-pig, pigeon, 

 goose), finding that normal rabbit serum had not the precipitating 

 effect of the antiserum on human blood, albuminous urine, pleuritic 

 and peritoneal exudate. 



At this stage I reported (11, v. 1901) having tested 24 bloods; only 

 human, and to a lesser degree, 2 monkey bloods reacting. Soon after 

 (1, VII, 1901 ; 36 bloods tested) I reported the blood of four species of 

 monkey as having given a slight but distinct reaction, a very faint 

 clouding appearing in solutions of the bloods of the horse, ox, and sheep," 

 all the others remaining perfectly clear. 



Ziemke (27, vi. 1901) obtained antiserum from Wassermann and 

 Schiitze, and tested it upon 12 bloods (1). A reaction in 15 minutes, 

 and a precipitum after 24 hours only being found in human blood 

 dilutions. 



Schirokich (21, vii. 1901) injected rabbits with blood from the 

 placenta and cord. He found that blood-stains 2 years old gave the 

 reaction when dissolved and brought into contact with his anti-human 

 serum. He tested 9 bloods (2). 



In the meantime my collection of bloods had reached 140, including 

 the bloods of 12 species of monkeys (some in duplicate) including 

 10 Cercopithecidae, and 2 Cebidae. I reported on these tests in my paper 

 of 14, IX. 1901 : "All the bloods of the Old World monkeys gave a very 

 marked reaction, less powerful however than that of human blood. 

 They also reacted to a weak antiserum. On the other hand the South 

 American monkeys (Cebidae) gave but a slight reaction with human 

 antiserum as compared to that of the other monkeys, and a weak anti- 

 serum produced no precipitation in the blood of Mijcetes senicidus." 

 I reported further upon this interesting observation in subsequent 

 papers (21, xi. and 16, xii. 1901, p. 408), having in the meantime also 

 tested the bloods of the Ourang-Outang and Chimpanzee with positive 



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