224 THE LIFE OF AN INSECT. 



and winter came again, finding it still a larva : the 

 second winter passed, and it was not until April 

 1748, that is, more than eighteen months after 

 it first became a larva, and entered its cocoon, that 

 it underwent the change, and became a pupa : some 

 time afterwards it became a perfect insect. 



