POWERS OF COMMUNICATION. 165 



been informed by A of the existence of the larvse, they 

 found their way to them by tracking a's footsteps. If the 

 former, they would in any case pass over the bridge k 

 by whichever strip of paper it was constituted. On 

 the other hand, if they found the larvae by tracking, 

 then as the piece of paper by which a passed was 

 transferred to L, it would mislead them and carry them 

 away from the larvae to i. In every case, then, I tran.s- 

 posed the two papers forming the little bridges as 

 soon as the ant A had crossed over k and L. 



I put her (November 7, 1875) to the larvse on f 

 at 6.15 A.M. After examining them carefully, she re- 

 turned to the nest at 6.34. No other ants were out ; 

 biit she at once reappeared with four friends and 

 reached the larvse at 6.38. None of her friends, how- 

 ever, crossed the bridge ; they went on to D, wandered 

 about, and returned home. A returned to the larvse at 

 6.47, this time with one friend, who also went on to D 

 and returned without finding the larvse. 



7. 0. Ant A to larvse. 



7. 8 „ An ant at 7.10] 



[went over 

 I L to I. 



7.17 „ with a friend, who at 7.21 



fwith two friends.) 

 7.25 i \ 7.27 



" ( one of whom at] 



7.32 „ the other at 7.35 



(with a friend who] 

 went on to D, and [ '^•41 

 then at ) 



