526 Journal of Agricultural Research voi. in. nos 



(10) KiTTREDGE, J., Jr. 



1913. Notes on the chestnut bark disease (Diaporthe parasitica, Murrill) in 

 Petersham, Mass. In Bui. Harvard Forestry Club, v. 2, p. 13-22. 



(11) Metcalf, Haven, and Collins, J. F. 



191 1. The control of the chestnut bark disease. U. S. Dept. Agr. Farmers' 



Bui. 467, 24 p., 4 fig. 



(12) MiCKLEBOROUGH, JOHN. 



1909. A report on the chestnut tree blight, the fungus, Diaporthe parasitica, 

 Murrill. 16 p., 2 pi. (i col.). Pub. by Penn. Dept. Forestry. 



(13) Murrill, W. A. 



1906. A serious chestnut disease. In Jour. N. Y. Bot. Gard., v. 7, no. 78, 



P- 143-153. fig- 13-19- 



(14) Rankin, W. H. 



1912. The chestnut tree canker disease . In Ph)rtopathology, v. 2, no. 2, p. 99. 



(15) 



1912. How further research may increase the efficiency of the control of the 



chestnut bark disease. Penn. Chestnut Blight Conf., Rpt. of Proc, 

 1912, p. 46-48. 



(16) 



1913. Some field experiments with the chestnut canker fungus. In Phytopa- 



thology, V. 3, no. I, p. 73. 



(17) Studhalter, R. A. 



1914. Insects as carriers of the chestnut blight fungus. In Phytopathology, 



V. 4, no. I, p. 52. 



PLATE LXIII 



Fig. I. — Petri-dish culture 5044 from 12 minutes' exposure of chestnut-bark agar, 

 made on September 20, 1913, 2 hours and 8 minutes after the cessation of a rain, 

 at station 51, located 27 feet from the nearest lesion. 



Fig. 2. — Petri-dish culture 5041 from 16 minutes' exposure of chestnut-bark agar, 

 made on September 20, 1913, i hour and 55 minutes after the cessation of a rain, at 

 station 49, located 414 feet from the source of the spores. Ten of the twelve colonies 

 are those of Endothia paiasiiica. 



