Graham-SmilA 349 



indicating a relationship with the, Chelonia. The few positive results 

 obtained with Laccrtilia and Ophidia were feebly marked. 



Percentage 

 of positive 

 Material tested .? . + reactions 



26 Egg-Albumins 



(a) 15 Birds' egg-albumins 12 2 1 20 



(b) 2 Reptile 1 1 50 

 (r.) 3 Amphibian,, 3 

 (d) 6 Fish ,, (> 



129 Blood Sera 



1 15 Chelonia 5 1(7%) 1(7%,) 3 (20"/ ) 5(33%) 66 



4Crooodilia 3 1 25 



60 Reptilia J , , T ft 



j 13 Lacertiha 13 



(28 Ophidia 28 



18 Amphibia 18 .0 



39 Pisces 39 



12 Arthropoda 12 



B. Anti-Crocodilian Sera. 

 Testa ivith Anti-Alligator 



This antiserum was made by Dr Nuttall with the semm of the 

 Chinese Alligator (Alligator sin en sin). 



Percentage 

 of positive 

 ? * x + + reactions 



1 ... 25 



1 ... 100 







L 2(18%) 1(9%) 2(18%) 54 

 1 .12 100 





 

 

 

 



This was a moderately powerful antiserum. It showed maximum 

 reactions with the Crocodilia and Chelonia. One out of the four Birds' 

 egg-albumins tested gave a slight reaction. The tests on the Lacert ilia, 

 Ophidia, Amphibia, Pisces, and Arthropoda were carried out on the best 

 material obtainable, but all with negative results. 



