Report of the Commissioners . Bark of a twig covered with scales containing the eggs of the Oyster-shell Bark-louse (Aspidiotus conchiformis.) Flat-headed Apple Tree Boi-er (Chrysobothrisfemorata)—a, larva; h, chrysalis;and d, perfect insect. INSECTS INJURIOUS TO THE APPLE.

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Keywords: ., bookcentury1800, bookdecade1880, booksubjectagriculture, bookyear