EMBRYO FLY AND EGGS. 23 
globe, which means a perfectly round 
body ; a currant is a small globe : a 
globe a great deal smaller is called a 
globule. 
Lucy, I think that these little eggs 
must be like excessively small drops of 
water. 
Mother. Yes, they have much that 
appearance. As the caterpillar increases 
in growth, the fly also increases, till it 
comes to its full size. 
Lucy. But are all caterpillars like 
each other ; and all of them provided 
with so many skins, and the fly in the 
middle ? 
Mother. In all, the fly is withinside ; 
and they have all of them several skins : 
though some species may have only three 
or four, while others have five or six. In 
shape they vary almost as much as in 
colour ; some being hairy and some 
smooth ; some have horns before and 
others have them placed behind ; some 
are of great size, while others remain 
extremely small. 
