EXPEEIMENTS ON CO-OPERATION. 373 



At. 11.37 — returned again and took another. 



11.40 

 11.52 



At 12.2 another ant came to the larvae in the left- 

 nand cup. I imprisoned her. 



At 12. 3 — returned again and took another 

 12.15 



12.30 



12.37 



12.41 

 12.50 

 12.58 



1. — 



1. 7 

 1.12 — 



1.16 

 1.28 



1.32 — 



1.35 

 1.44 



1.50 — 



1.55 



2. 6 



2. 9 — 



2.17 

 2.29 



2.39 — 



2.42 



2.49 2.49 



3. — 



3. 3 



J> 5» 



>5 >J 



55 55 



55 55 



55 >5 



55 J5 



55 J5 



55 J5 



55 55 



» »> 



J> J» 



J5 » 



J> 55 



>J 5» 



»> » 



»> n 



n n 



n >j 



55 55 



55 55 



55 55 



55 55 



55 55 



55 J» 



At 3.10 another ant came to the left-hand cup. ] 

 imprisoned her. 



At 3.14 returned again and took another. 



3.15 — ,) n 



3.24 n ft 



