170 EXPERIMENTS TO TEST 
of the nest at 5.39 with 8 friends, when exactly 
the same thing happened. She again came out with 
companions at the undermentioned times :~- 
Number of Number of 
Hour. Friends, Hour. Friends 
5.44 4 6.44 — 
5,47 4 6.46 3 
5.49 = 6.49 2 
5.52 — 6.56 —_— 
6.54 5 6.59 _— 
5.57 2 7. 2 2 
5.59 2 7.4 — - 
6. 1 5 7. 6 3 
6. 4 1 7,8 3 
6. 7 — 7.10 5 
6.11 3 7.13 — 
6.14 4 7.17 3 
6.17 6 7.19 7 
6.20 — 7.21 5 
6.23 5 7.24 _— 
6.25 6 7.26 3 
6.29 8 7.29 1 
6.32 2 7.31 2 
6.35 a 7.35 a 
6.42 4 
Thus during these two hours more than 120 ants 
came out of the nest in company with the one under 
observation. She knew her way perfectly; and it is 
