324 Quanti'fafive Precipitin Tests 



Here an immediate and marked reaction only took place with sheep 

 blood, a marked clouding in that of Cervus, a faint clouding in that 

 of the dog. The figure for the cat appears too high. 



Tests until Anti-Sheep Serum (15. ii. '02). Series II. 



Antiserum from another rabbit (B) treated as before. 



In this series the bloods of two sheep (4. i. and 10. Ii. '02) gave 

 a precipitum of "01 85 and '022 respectively in 1 : 100 dilution (average 

 •02), the corresponding figures in 1 : 200 dilution being "OISS and "Oil. 

 Tests conducted as before, "02 being taken as 100 gave the following- 

 results : 



Sheep serum dried in scales 



fluid, with chloroform 

 ,, sealed in tubes 



19. iii. 01 gave in 1-100 dilution in 1-200 dilution 

 -017 -015 I 



0125 >cc. precipitum 



•025 

 •026 



•0155) 



Tests with Anti-Sheep Serum (11. ill. '02). Series III. 

 Antiserum from a third rabbit treated as before. 



The antiserum in this case was exceptionally ])owerful, and it 

 appears due to this fact that such a contrast is noted in related 

 Ungulate bloods. The results with the bloods of other Bovidae and 

 the Cervidae ajjpear fairly uniform, whereas very little reaction was 

 obtained with the bloods of the })ig and horse. 



The results with 28 other mammalian bloods were as follows : 



l'ii>iiiiti'!<. 8 bloods examined from 7 species: ^^!ln (2 samples gave and 3 "/(, reaction), 

 Onrang and Chimpanzee (0"/o), Mandrill and Baboon (4"/u), < Gorilla and Atelea (6 and 

 10 "/u respectively, but both these sera were thick and certainly somewhat concentrated 

 through keeping). 



