4 PHYSIOLOGY OF THE HONEY-BEE. 
10. The faccts of the composite eyes, thousands in num- 
ber, are six-sided, like the cells of the honey-comb, and 
being directed towards nearly every point, they permit the 
insect to see in a great number of directions at the same 
time. 
"Figs ls 
A, Head of worker. B, Head ofqueen. C, Headofdrone. (Magnified.) 
(From ‘‘Les Abeilles’’ of Maurice Girard.) 
11. In comparing the eyes of worker, queen and drone, 
Mr. Cheshire says: 
“The worker spends much of her time in the open air. Accu- 
rate and powerful vision are essentials to the proper prosecution 
of her labours, and here I found the compound eye possessing 
about 6,300 facets. In the mother of this worker I expected to 
find a less number, for queens know little of daylight. After 
wedding they are out of doors but once, or at most twice, in a 
year.* This example verified my forecast, by showing 4,920 facets 
on each side of the head. A son of this mother, much a stay-at- 
home also, was next taken. His facets were irregular in size, 
those at the lower part of the eye being much less than those 
near the top; but they reached the immense number of 13,090 on 
each side of the head. Why should the visual apparatus of the 
drone be so extraordinarily developed beyond that of the worker, 
whose need of the eye seems at first to be much more pressing 
than his?” 
© When going out with a swarm, 
