DIALOGUE XXV. 
THE EYES OF INSECTS. RETICULATED 
EYES. STEMMATA. 
MO THER. Well, Lucy, what is the 
cjuestion you wished to ask yesterday, 
about eyes ? 
Lucy, I want you to explain how in- 
sects see ; for when I considered what 
you said of the little projections, in the 
transparent covering of their eyes, I found 
that 1 did not clearly understand it. 
Mother. It is a difficult subject to 
explain to a little girl, who does not yet 
know any thing of the construction of a 
common eye. Very few insects have the 
power of moving their eyes, and none of 
them in the same degree or manner that 
we do; for instance, we can turn our 
eyes from one object to another, with the 
