Guide to the study of insects, and a treatise on those injurious and beneficial to crops: for the use of colleges, farm-schools, and agriculturists . olive-colored slime. It feeds onthe upper side of the leaves of both the wild and cultivatedcherry and pear trees, and has been found on the plum and.

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Keywords: ., bookcentury1800, bookdecade1870, bookpublishe, booksubjectinsects