EXPERIMENTS ON CO-OPERATION. 373 
At. 11.37 — returned again and took another. 
11.40 
11.52 aA 3 
At 12.2 another ant came to the larve in the left- 
band cup. Limprisoned her. 
bb ” 
At 12. 3 — returned again and took another 
12.15 by as 
12.30 5 ; 
12.37 _ 3 os 
12.41 re aa 
12.50 i 
12.58 45 i 
1. U = ” ” 
1. 7 29 29 
1.12 — ms 33 
1.16 ” ” 
1.28 ” 7 
1.32 —_— a re 
1.35 $3 a 
1.44 ” ” 
1.50 — sa 9 
1.55 9 eo 
2. 6 ” »” 
2. 9 anes ” ” 
2.17 3 » 
2.29 95 3 
2.39 aE 3 » 
2.42 33 5 
2.49 2.49 49 » 
3. 0 at ” ” 
3. 3 BPs 29 
At 3.10 another ant came to the left-hand cup. I 
imprisoned her. 
At 3.14 returned again and took another. 
3.15 
29 ” 
3.24 ” ” 
