380 EXPERIMENTS ON 



At 7.42 an ant went to a wrong pin. 



7 47 

 ?*' '? 



7.4o 



7.49 ,, 



7.52 the right pin. 



7.55 the first ant returned, and at 7.56 went 



away again. 



7.57 an ant went to wrong pin. 

 7.58 right 



8. wrong 



right 



n 8 ' 1 99 Wr n g 99 



After this, for an hour no more ants came. On this 

 occasion, therefore, while there were ten pins, out of 

 thirty ants, sixteen came to the right one, while four- 

 teen went to one or other of the nine wrong ones. 



July 18. I put out the boards as before at 4 o'clock. 

 Up to 4.25 no ant came. I then put one (No. 1) to the 

 honey; she fed for a few minutes, and went away 

 at 4.31. 



At 4.35 she came back with four friends, and went 

 nearly straight to the honey. At 4.42 she went away, 

 but came back almost directly, fed, and went away again. 



At 4.57 she returned, and at 5.8 went away again. 



4.45 an ant came to wrong pin. 



4.47 



,, 4.4y ,, 



4.50 right pin. 



4.52 



4.55 wrong pin. 



4.56 right pin. This ant (No. 2) I 



allowed to return to the nest, 

 which she did at 5.23. 



5. 6 right pin. 



5.11 wrong pin. 



