Chapter V.--_The Great Change._--An Insect Prisoner--Escape

of the Cossus--Escape of a Fly--A guide-line to the Captive--Cocoon of Emperor Moth--Escape backwards--Chemical solvent--Escape of Ants--Huber's Ant-hill--Assistant Ants--Aquatic Insects--The Caddis-worm--Singular escape--The Gnat--A time of Peril--Blood-Worms--A curious spectacle--The Dragon-Fly--Phenomena of the Change--The Insect new-horn--Curious facts about Pupæ 273