SIB JOHN LUBBOCK ON ANTS, BEES, AND WASPS. 279 



should by turns cover the same portion of the nest. The results 

 were as follows — the numbers indicating the approximate num- 

 bers of ants under each glass (there were sometimes a few not 

 under any of the strips of glass) :— 



1 Grreen. Yellow. Eed. Violet. 



50 40 80 



2 Violet. Green. Yellow. Eed. 



20 40 100 



3 Eed. Violet. Green. Yellow. 



60 50 50 



4 Yellow. Eed. Violet. Green. 



50 70 1 40 



5 Green. Yellow. Eed. Violet. 



30 30 100 



6 Violet. Green. Yellow. Eed. 



14 5 140 



7 Eed. Violet. Green. Yellow. 



50 40 70 



8 Yellow. Eed. Violet. Green. 



40 50 1 70 



9 Green. Yellow. Eed. Violet. 



60 35 65 



10 Violet. Green. Yellow. Eed. 



1 50 40 70 

 11 Eed. Violet. Green. Yellow. 



50 2 50 60 



12 YeUow. Eed. Violet. Green. 



35 55 70 



Adding these numbers together, there were, in the twelve ob- 

 servations, under the red 890, under the green 544, under the 

 yellow 495, and under the violet only 5. The diiference between 

 the red and the green is very striking, and would doubtless have 

 been more so, but for the fact that when the colours were trans- 

 posed the ants which had collected under the red sometimes re- 

 mained quiet, as, for instance, in cases 7 and 8. Again, the dif- 

 ference between the green and yellow would have been still more 

 marked but for the fact that the yellow always occupied the posi- 

 tion last held by the red, while, on the other hand, the green had 

 some advantage in coming next the violet. In considering the differ- 



