EVEN IF BROUGHT 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., after 

 which I looked every hour, 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 pupse 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 l7th 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 course 

 there were no larvse or pupse. In due course both 

 queens laid eggs, and young ants were brought up in 



