Pathogenicity of the Chestnut Bark Disease 65 



possess constant and easily recognized cultural characters on 

 several culture media, of which potato agar and corn meal are 

 the best that have been tried. 



From the above discussion it is evident that the concensus of 

 opinion is that the true chestnut bark fungus was incorrectly 

 named Diaporthc parasitica and that it is undoubtedly a species 

 of Endothia. The true chestnut bark disease is now referred to 

 by pathologists and mycologists as being caused by the growth, in 

 the bark and outer wood layers, of a parasitic fungus, Endothia 

 parasitica (Murr.) And., which has very decided pathogenic 

 tendencies. 



LITERATURE CITED. 



1. Anderson, P. J. and H. W. : The Chestnut Blight Fungus 

 and a Related Saprophyte. Phytopathology, Vol. 2, pp. 204- 

 210, Oct. 1912. 



2. Bailey, I. \Y., and Ames, J. S. : Primitive Characters Re- 

 called by the Chestnut Bark Disease and Other Stimuli. 

 Science, U. S., Vol. 39, No. 999, p. 290, 1914. 



3. Clinton, G. P. : Chestnut Bark Disease, Diaporthe parasitica 

 Murr. 31st and 32nd Connecticut Agricultural Experiment 

 Station Rept., pp. 345-346 and 879-890, 1907-1908. 



4. : Some Facts and Theories Concerning Chest- 

 nut Blight. Report of Pennsylvania Chestnut Blight Con- 

 ference, Harrisburg, Feb., 1912, pp. 75-83. 



5. Craighead, F. C. : Insects Contributing to the Control of 

 the Chestnut Blight Disease. Science, N. S., Vol. 36, p. 825, 

 Dec. 13, 1912. 



6. Faull, J. H., and Graham, G. H. : Bark Disease of the Chest- 

 nut in British Columbia. Forestry Ouarterly, Vol. 12, No. 2, 

 pp. 201-203. 1914. 



7. Fisher, A. K. : Habits of the Woodpeckers. Report of 

 Pennsylvania Chestnut Blight Conference, Harrisburg, Feb., 

 1912, pp. 103-104. 



8. Fulton, H. R. : Recent Notes on the Chestnut Bark Disease. 

 Report of Pennsylvania Chestnut Blight Conference, Har- 

 risburg, Feb., 1912, pp. 48-56. 



9. Heald, F. D., and Studhalter, R. A. : Preliminary Note on 



Birds as Carriers of the Chestnut Blight Fungus. Science, 

 N. S., Vol. 38, No. 973, pp. 278-280, 1913. 



10. Merkel, Hermann W. : A Deadly Fungus on the American 

 Chestnut. 10th Ann. Report N. Y. Zoological Society DP 

 96-103, 1905. 



