THE 
BOOK OF BUTTERFLIES. 
CHAPTER I. 
ON THE PHYSIOLOGY OF THE EGGS OF PAPILIONACEOUS 
INSECTS, AND THEIR MODE OF HATCHING, &e. 
Burrerriizs, Sphinges, and Moths, like the whole 
known species of insects, are strictly oviparous 
animals. 
There is an unerring foresight possessed by the 
female, that of depositing her eggs in the precise 
place where food, suitable to the existence of the 
caterpillar after its exclusion, is found. With very 
few exceptions the eggs are enveloped in an adhesive 
cement, which fixes them to the spot on which they 
are deposited. When eggs are extruded singly, this 
cement generally envelopes each individual with a 
thin coating, as in the ease of the Admirable Butter- 
fly, (Vanessa atalanta ;) but when they are deposited 
