212 Tests with Precipitins 



Reactions 



lo 

 o 

 o 

 o 

 o 

 o 

 100 



x + 



210 MAMMALIA 210 



191 AVES (inol. 4 eggs) 191 



17EEPTILIA 15 2 (?) 



12 AMPHIBIA 10 2 (?) . 



14 PISCES 14 



6 CRUSTACEA, all of the order Decapoda 1 



Note: One sample of crustacean blood noted in the tables is excluded (No. 897), as 

 the foam-test of the dilution was doubtful. 



From the above table it will be seen that the anti-lobster serum only 

 produced first and second-class reactions with crustacean bloods. The 

 faint clouding in one of the six examined was doubtless due to the 

 small quantity which went into solution from filter-paper. A faint 

 clouding was observed to take place in two reptilian and two amphibian 

 blood dilutions, the test in this case being unfortunately not repeated 

 owing to lack of antiserum. Dr Graham-Smith has extended the studies 

 in this relation also (see Section VIII). Otherwise these are the only 

 investigations made with anti-crustacean sera. I might add that I first 

 reported having produced such an antiserum in my paper of 20, I. 1902, 

 and briefly referred to the results above given in my paper of 5, ix. 1902. 



