THE ANIMAL AND ITS ENVIRONMENT 



731 



:tio- 





Yr 



y*1a 



V 



ar-fy Opr-in^ Oprins 



•Summer 



Ja/y 



Aug 



Aufumn 



A^oy 



£>e<: 



Jan F^b 



Fig. 381. — Numbers of insects collected in average catch with 100 sweeps of an 

 insect sweep net in a prairie ravine (Oklahoma) arranged according to orders 

 through the seasons of the year. (Data from Carpenter.) 



