in.] RECOLLECTION OF FRIENDS. 87 



this I could not distinguish them among the rest, but 

 they were certainly not attacked. 



June 9th. Put in two more at the same hour. Up to 

 3 in the afternoon they were neither of them attacked. 

 On the other hand, two strangers from different nests, 

 whom I introduced at the same time, were both very 

 soon attacked. 



July 14th. I put in two more of the friends at 10.15. 

 In a few minutes they joined the others, and seemed quite 

 at home. At 11, they were among the others; at 12, 

 ditto ; and at 1, ditto. 



July 21st. At 10.15 I put in two more of the old 

 friends. At 10.30 neither were being attacked. At 11, 

 ditto. 12, ditto. 2, ditto. 4, ditto. 6, ditto. 



October 7th. At 9.30 I put in two, and watched 

 them carefully till 1. They joined the other ants, and 

 were not attacked. I also put in a stranger from 

 another nest. Her behaviour was quite different. She 

 kept away from the rest, running off at once in evident 

 fear, and kept wandering about, seeking to escape. At 

 10.30 she got out. I put her back, but she soon 

 escaped again. I then put in another stranger. She was 

 almost immediately attacked. In the meantime, the old 

 friends were gradually cleaned. At 1.30 they could 

 scarcely be distinguished. They seemed quite at home, 

 while the stranger was being dragged about. After 2, I 

 could no longer distinguish the friends. They were 

 however certainly not attacked. The stranger, on the 

 contrary, was killed and brought out of the nest. 



This case, therefore, entirely confirmed the preceding ; 

 while strangers were attacked, friends were amicably 

 received, 



