The chestnut bark disease . Fig. 7.—A view to show how bark is rotting and Pig. 8.—A more advanced stage than fig. 7. Bark peeling off. I 218 W. V. AGR. EXPERIMENT STATION [Bulletin 137 vania, Deleware, Maryland, Virginia, West Virginia, and theDistrict of Columbia. A glance at the map, figure lo, will show how general hasbeen the spread from New York City as a center. In consid-ering this map one should remember that a diseased tree ispractically doomed to die. There are numerous diseasedareas, especially in Pennsylvania, which have been foundsince this map was plotted.

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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwestv, bookyear1912