EVEN IF BROUGHT UP SEPARATELY. 149 
10 am. 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 I put three of the ants which had 
emerged from the pup 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 17th 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 larve or pupe. In due course both 
queens laid eggs, and young ants were brought up in 
