The Life of an Insect being a history of the changes of insects from the egg to the perfect being.
Chapter IV.--_Varieties and Age of the Pupa._--Different
kinds of Pupæ--Age of the Pupa--Pupæ hatched in a Hot-house--Butterflies in Winter--Pupæ hatched by a Hen--Glass Eggs--Influence of Warmth and Cold--Dreams of Immortality--Réaumur's mistake--Varnishing Pupæ--Preservation of Eggs--Falling of the "Manna"--Final changes of the Pupa 251