Annual report of the Maine Agricultural Experiment Station . Fig. 66. Apple root, showing knotty growth caused by Woolly Fjg. 67. Nymphs of the Woolly Aphid, Schisoncura lanigera on watershoot of mountain ash, Pyrus americana,—the immediate progeny ofmigrants from elm leaf rosette. Photographed at Orono, June 28,

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Keywords: ., bookcentury1800, bookdecade1880, booksubjectagriculture, bookyear