142 YOUNG ANTS RECOGNISED 



then abandoned. At 10.50 the third also was dragged 

 out of the nest. 



I then put two of these ants and a third young one 

 into nest 2. At 11.15 A.M. they seemed quite happy; 

 but at 11.30 two were being dragged about; the third, 

 who was very young, was, on the contrary, being care- 

 fully cleaned. At 12 this last one was undistinguish- 

 able ; of the other two, one was being attacked, the 

 second was taken no notice of, though several ants 

 came up to her. At 12.5 the first was dragged out of 

 the nest and then abandoned ; the second was being 

 carefully cleaned. This went on till 12.20, when the 

 paint was entirely removed. 



September 27. I put in three more of these young 

 ants into nest 1, at 7.45 A.M. At 8 o'clock they seemed 

 quite at home among the other ants. A few minutes 

 after, one was being held by a leg ; the other two seemed 

 quite at home. At 8.30 one was almost cleaned, the 

 other I could not see. At 9 two of them were quite at 

 home, but I could not see the third. At 9.30 they were 

 both nearly cleaned ; and after that we were no longer 

 able to distinguish them. 



Thinking the results might be different if the ants 

 were allowed to become older before being returned into 

 their nests, I made no further observations with these 

 ants for two months. I then took two of the ants which 

 had emerged from the pupae separated on Septem- 

 ber 20, and which had been brought up by ants 

 from nest 2, and on November 22 I put them back 



