34 ADOPTION OF A QUEEN. 
in which fertile queens introduced into queenless nests 
were ruthlessly attacked, and subsequent experiments 
have always had the same result. Mr. Jenner Fust, 
however, suggested to me to introduce the queen into 
the nest, as is done with bees, in a wire cage, and leave 
her there for two or three days, so that the workers 
might, as it were, get accustomed toher. Accordingly 
I procured a queen of F. fusca and put her with some 
honey in a queenless nest, enclosed in a wire cage so 
that the ants could not get at her. After three days I 
let her out, but she was at once attacked. Perhaps I 
ought to have waited a few days longer. On the con- 
trary, Mr. McCook reports a case of the adoption of a 
fertile queen of Cremastogaster lineolata by a colony 
of the same species: '—‘The queen,’ he. says, ‘was 
taken April 16, and on May 14 following was introdueed 
to workers of a nest taken the same day. The queen 
was alone within an artificial glass formicary, and 
several workers were introduced. One of these soon 
found the queen, exhibited much excitement but no 
hostility, and immediately ran to her sister workers, all 
of whom were presently clustered upon the queen. 
As other workers were gradually introduced they joined 
their comrades, until the body of the queen (who is 
much larger than the workers) was nearly covered with 
them. They appeared to be holding on by their man- 
dibles to the delicate hairs upon the female’s body, and 
1 Proc. Acad. Natural Sciences of Philadelphia, 1879. ‘Note on 
the Adoption of an Ant-Queen,’ by Mr. McCook, p. 139. 
