60 Ants. 



wide. Having then put a Black Ant from one of 

 my nests to these larvae, she began carrying them 

 off, and by degrees a number of friends came to 

 help her. I then, when about 25 ants were so 

 engaged, moved the little paper bridge slightly, so 

 as to leave a chasm just so wide that the ants could 

 not reach across. They came and tried hard to 

 do so ; but it did not occur to them to push the 

 paper bridge, though the distance was only about 

 one-third of an inch, and they might easily have 

 done so. After trying for about a quarter of an 

 hour they gave up the attempt, and returned home. 

 This I repeated several times. 



4. Then, thinking that paper was a substance to 

 which they were not accustomed, I tried the same 

 with a bit of straw one inch long and one-eighth of 

 an inch wide. The result was the same. I repeated 

 this more than once. 



Again, I suspended some honey over a nest of 

 Yellow Ants at a height of about half an inch, and 

 accessible only by a paper bridge more than 10 feet 

 long. Under the glass I then placed a small heap 

 of earth. The ants soon swarmed over the earth 

 on to the glass, and began feeding on the honey. I 

 then removed a little of the earth, so that there was 

 an interval of about one-third of an inch between 

 the glass and the earth ; but, though the distance 

 was so small, they would not jump down, but pre- 

 ferred to go round by the long bridge. They tried 

 in vain to stretch up from the earth to the glass, 



