246 



THE INSECT WORLD. 



north of France ; 3rdly, that the cultivation of the Ailanthiis, or tlie 

 false Japan varnish tree, on which this insect lives, is easy even in 

 the most sterile soil 



M. Guerin-Meneville showed still further that ailantine^ the 



Fig. 228!— Eggs, larvie, and cocoons of Attacus (Bombyx) Cynthia. 



textile matter furnished by the cocoon of the Cynthia, is a sort of 

 floss silk holding a middle place between wool and the silk of the 

 mulberiy-tree worm, and which, as it can be produced at scarcely any 

 expense, would be very cheap, and would serve for the fabrication ot 

 what are called fancy stufts, for which ordinary floss silk is now used. 

 In 1862 M. Guerin-Me'neville sent in a Report to the Minister oi 



