EXPERIMENTS ON A QUEEN ANT. 197 



opaque porcelain, one of violet, and one of red glaps, 

 al of the same size. The result is shown below. 



Total 90 88 



Obviously, therefore, the ants showed no marked 

 preference for the porcelain. On one, but only on one 

 occasion (Obs. 9), most of the pupae were carried under 

 the violet glass, but generally it was quite neglected. 



I now tried a similar experiment with porcelain and 

 yellow glass. 



Obs. 



, „ 4. J 1 ■ o (pupas were taken q( nnder 



1. Qucenwentunderporcelain » { ^' ^^^^^^ ^^y^^^ ^{p^^^^ 



2. „ „ 2 „ 8 „ 

 3* M ft ^ f» 2 » 



