March, 1912.] THE CHESTNUT BARK DISEASE. 



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FIG. 12. Map showing where the disease has been found in West Virginia. 

 The specimen from Whetsell was picked up by a tourist and the one from Lewis- 

 burg by a summer visitor. The disease at Pickens was looked up by Mr. A. B. 

 Brooks and the infected tree, which came from a nursery, was destroyed. 



