E"\'EN IF BEOUGHT UP SEPARATELY. 149 



10 A.M At 10.30 A.M. they were quite comfortable 

 amongst the others. At 11 a.m. I looked again and 

 they seemed quite at home, as also at 11.30 a.m., aftei 

 which for some time I looked every horn-, and they 

 were never attacked. The next morning I found them 

 peaceably among the other ants. 



On September 15 1 put three of the ants which had 

 emerged from the pupae taken out of nest A, and 

 nursed by ants from that nest, and put them into nest 

 B at 1.30 P.M. They seemed to make themselves quite 

 at home. I looked again at 2.30 p.m., with the same 

 result. At 3.30 p.m. I could only find two, the third 

 having no doubt been cleaned, but no ant was being 

 attacked. At 5.30 p.m. they were no longer distin- 

 guishable, but if any one was being attacked we must 

 have seen it. The next morning they all seemed quite 

 peaceful, and there was no dead ant in the box. I 

 looked again on the I7th and 19th, but could not 

 distinguish them. As, however, there was no dead 

 ant, they certainly had not been killed. I then put in 

 a stranger ; she was soon attacked and driven out of 

 the nest — showing that, as usual, they would not tole- 

 rate an ant whom they did not recognise as in some 

 way belonging to the community. 



Again, on April 10, 1881, I divided a two-queened 

 nest of Formica fusca, leaving a queen in each half. 

 At that time no eggs had yet been laid, and of com-se 

 there were no larvae or pupae. In due course both 

 queens laid eggs, and young ants were brought up in 



