10€ EXPERIMENTS WITH DROWNED ANTS. 
other twenty-eight times, besides which five others 
passed by; but not one took the slightest notice. 
I immersed three ants for eight hours, and then 
put them on the strip of paper. They began to recover 
in three-quarters of an hour, but were not quite them- 
selves till half an hour afterwards. During the first 
three-quarters of an hour two marked ants passed, each 
four times ; and two others also went by. During the 
following half-hour the two marked ants passed sixteen 
times, and three others; but none of them took any 
notice. 
I immersed another ant for forty minutes, and put 
her on the strip of paper. She recovered in twenty 
minutes, during which time the marked ones, which 
were the same as in the preceding case, went by four- 
teen times without taking any notice. 
I immersed two ants for ten hours, and then placed 
them on the strip of paper. The same two marked ants 
passed respectively eighteen and twenty-six times, and 
one other passed by also without taking any notice. 
After this I left off watching. 
I immersed two ants for four hours, and then put 
them on the strip of paper. They began to recover 
in an hour, during which two marked ants, not the 
same as in the preceding case, passed respectively 
twenty-eight and ten times, and two others went by; 
but none of them took any notice 
I immersed an ant for an hour, and then put heron 
the same strip of paper as in the previous cases. A marked 
