Successful farming : a ready reference on all phases of agriculture for farmers of the United States and Canada . Stages and Work of Sprint. Canker-Worm {PaUacrita vemata).1 1—Egg mass on bark scale. 2—The larvae or canker-worms. 3—Pupa?.4—Female moths. .5—Male moth. 6—Work of canker-worms on apple leaveswhen small. 7—Later work of the larva?, only the midribs of leaves beingleft. 1-5—Considerably enlarged. 6, 7—Reduced. Bur. Ent. Bull. 08 Pt 2. (992) INSECT PESTS AND THEIR CONTROL 993.

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear