. The dying hickory trees : Cause and remedy . Fig. 1.—Work of the hickory barkbeetle (Scol- ytus quadrispinosus) on surface of wood be- neath the bark : a, Primary gallery ; o, larval mines. (Author's illustration.) The first evidence of the presence and work of this beetle is the premature dying or falling of a few of the leaves in July and August, caused by the feeding of the adult or parent 1 Scolytus quadrispinosus Say; Order Coleoptera, family Scolytidse.

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Keywords: ., bookauthorunitedst, bookcentury1900, bookdecade1910, bookyear1912