1^ 



THE AMERICAN 



MIDLAND NATURALIST 



DEVOTED TO NATURAL HISTORY, PRIMARILY 

 THAT OF THE PRAIRIE STATES 



JULIUS A. NIEUWLAND. C. S. C. PH. D.. Sc. D. 

 EDITOR 



VOLUME VL 1919-1920 





UNIVERSITY OF NOTRE DAME 



NOTRE DAME. INDIANA 



