SERA 



Class PISCES 







Most of the above fish bloods were tested with antisera to Emu's, Duck's, 

 Fowl's, Crane's and Snake's egg-albumins, and Tortoise (2), Turtle, Alligator, 

 Lizard (2), Snake, Python, Frog, Ammocoetes, Ascidian, Lobster, Crab, and 

 Limulus (2) sera. No well-marked positive reactions occurred except that 

 between anti-Ammocoetes and Ammocoetes serum. 



380 



