150 RECOGNITION NOT INDIVIDUAL OR PERSONAL, 



each half of the nest. I will call the two halves as 

 before A and B. 



On August 15, at 9 a.m., I put three of the young 

 ants from A into B, and three from B into A. At 

 9.30 A.M. none were attacked, 10 a.m. ditto, 10.30 a.m. 

 ditto. One was being cleaned ; 12 a.m. ditto, 2 p.m. 

 ditto. In fact, they seemed quite at home with the 

 other ants. The next morning I was unable to recog- 

 nise them, the paint having been entirely removed. 

 The ants were all peaceably together in the nest, and 

 there were no dead ones either in the nest or in the 

 outer box. It is evident, therefore, that they had 

 been treated as friends. 



August 17. — I put in three more from B into A at 

 noon. At 12.30 p.m. they were with the other ants; 

 at 1 P.M., ditto, at 2 p.m. ditto, at 3 p.m. ditto, at 

 5 P.M. ditto. The following morning I was still able 

 to recognise them, though most of the paint had been 

 removed. They also were evidently treated as part of 

 the community. 



September 19. — Put in three more from A into B 

 at 8.30 A.M. I looked at them at intervals of half an 

 hour, but none of them were attacked. Next morning 

 there was no ant outside the nest, nor had any been 

 killed. 



October 10. — Put in three more at 7 A.M., and 

 looked at intervals of an hour. They were not at- 

 tacked, and evidently felt themselves among friends. 

 The next morning I was still able to recognise two. 



