THE. AMERICAN NATURALIST. [VoL. XXXVI. 































































































































































































LLLI 
LLLI 
LELE 
T 
LII 

















































































Fic. 12. — Aster puniceus L. Ray curve of 798 heads. Mean — 36.671679 « -075642 ; 
modes = 27, 35, 37; T= 4-480251 + .075642, 
