in.] RECOLLECTION OF FRIENDS. 85 



one, however, of so much interest, that it seemed to me 

 desirable to make further experiments on the subject. 

 On the 4th of August, 1875, therefore, I separated one 

 of my nests of F. fusca into two halves, which I kept 

 entirely apart. 



I then from time to time put an ant from one of these 

 nests into the other, introducing also a stranger at the 

 same time. The stranger was always driven out, or 

 even killed. The friend, on the contrary, was never 

 attacked, though I am bound to say that I could see no 

 signs of any general welcome, or any especial notice 

 taken of her. 



I will not trouble you with all the evidence, but will 

 content myself with one or two cases. 



On the 12th November last, that is to say, after the 

 ants had been separated for a year and three months, I 

 put a friend and a stranger into one of the divisions. 

 The friend seemed quite at home. One of the ants at 

 once seized the stranger by an antenna, and began 

 dragging her about. At 11.45 the friend was quite at 

 home with the rest. The stranger was being dragged 

 about. 



12.0. The friend was all right. Three ants now had 

 hold of the stranger by her legs and an antenna. 



12.15, Do. do. 12.30, Do. do. 12.45, Do. do. 1.0, 

 Do. do. 1.30, Do. One now took hold of the friend, 

 but soon seemed to find out her mistake and let go 

 again. 1.45. The friend was all right. The stranger 

 was being attacked. The friend had also been almost 

 cleaned, while on the stranger the colour had been 

 scarcely touched. 2.15. Two ants were licking the 

 friend, while another pair was holding the stranger by 



