Yoakum, Behavior of Squirrels. 



551 



B 



Fig. 2. Constructed from Table II. A. Curves for squirrels 1 and 4. (Pre- 

 viously untrained.) AB. Curve for squirrels 2 and 3. (Previously trained in 

 "sawdust-box" and in "outside latcli box.") 



