22 EMBRYO FLY AND EGGS. 
could such a very, very little tiling be seen 
through all the skins ? 
Mother. It was discovered by a per- 
son who made insects of all kinds the 
subject of his study. With the assist- 
ance of a powerful microscope, he saw. 
the little fly placed withinside the cater- 
pillar; its wings twisted like a cord, in 
a wonderfully small space ; its horns 
coiled, and placed on the head, and the 
trunk rolled up, and also placed on the 
head : even the eggs, which, when a per- 
fect creature in its winged state, it is after- 
wards to lay, are seen already formed, 
but without colour, and like transparent 
globules. 
Lucy. Mamma, I know that trans- 
parent means clear, so that one can see 
through it : but I do not know what 
globules meanl^ 
Mother, You are very right to ask the 
meaning of those words you do not under- 
stand, and I can hardly tell you how 
much pleasure I have in explaining them 
to you. Globule comes from the word 
