Ä¢¹½´«Ã½

Access rights only. This is a handout or public domain image supplied by a third party. Ä¢¹½´«Ã½ grants access to the digital file but provides no warranties regarding copyright or moral rights. Alteration, modification, or cropping is prohibited without prior approval. All commercial uses require advance authorization from the content provider.

This image could have imperfections as it’s either historical or reportage.

Economic entomology for the farmer and fruit-grower : and for use as a text-book in agricultural schools and colleges . hat on a head so prepared, within a week after a heavy applica-tion of Paris green, not a trace of arsenic remained. As a matterof fact, the use of Paris green as against the insect is quitecommon, although little is said of it, to avoid exciting prejudice, and I have yet to learn of the first case of arsenical poisoningfrom eating cabbage so treated. From New Jersey southwardand westward, one of our native species, P. protodice, becomesmore common and assists its imported relative in making havocamong the cabbages, but this also maybe easily controlled by themeasures above detailed. We find flying abundantly in our fields, and more conuuonamong clover, a bright, sulphur-yellow butterfly about as largeas the P. j-apce, with a single black spot on the fore-wings, and abroad black outer margin to both pairs. On the under side thehind wings have a central orange spot, often with a slight silvery-tendency. These butterflies belong tu the genus Colias, and the THE INSECT WORLD.Fig. 255. 249. Fig. 266.