igoS.] 



JENNINGS— HEREDITY IN PROTOZOA. 



401 



20 24 28 32 36 40 44 48 52 56 60 64 

 Breadth in IMicrons. 



72 76 80 



Diagram 2. Polygons of variation for breadth in culture i, and in its 

 descendants from selected specimens. The letters have the same significance 

 as in Diagram i. 



