1883 an ichneumon fly {Apanteles glomeratus) was imported from Europe to keep the cabbage worm in check. 

 It lays its eggs in the body of the cabbage worm: the larvae which hatch from these eggs make a meal on the 

 worm and then cut their way out and spin yellow cocoons beside his dead body. The number of cocoons 

 shown in the photograph illustrates w^hat a small chance the cabbage worm has of surviving this parasite. 

 It is interesting to note that the parasite is in turn preyed upon by a superparasite, a little chalcis fly "and so 

 on down, ad infinitum," no doubt. If a cabbage grower finds cocoons of the ichneumon fly, he should put 

 them in a box and put with them all the cabbage worms he can collect. He will thus aid the parasite to propa- 

 gate, and get a good stock established in his garden. Copyrighted photographs by Brown and Dawson. (Figs. 

 12 and 13.) 



