354 



Aiitisera for Reptilia 



Marked positive results with Antisera to 



Quantitative measurements with Anti-Reptilian Sera. 



The methods used in tabulating these results are the same as those 

 made use of in recording similar observations with the antisera to egg- 

 albumins. 



(1) Tests toith Anti-Tortoise Serum (T. ibera). 



Frog, Amphiuma, and Dogfish sera failed to react. The few quanti- 

 tative tests made with this antiserum are in accord with the qualitative 

 tests. By the latter method Tortoise and Turtle sera gave full reactions. 

 This is the only instance in which a non-homologous serum gave a 

 higher reading than the homologous serum, and the result is probably 

 due to some error in measurement, or dilution. By the qualitative 

 test Alligator serum, Greenfinch, Silver Pheasant, and Moorhen's egg- 

 albumins gave slight reactions, and Hedge-sparrow egg a doubtful 

 reaction, 



