BLACK EOT OF POTATO I LITERATURE 279 



Berlin, 1903, pp. 364-432. His first paper on this disease is 

 in Ber. d. d. Bot. Ges. XX Bd., Heft 1, 1902. 



Read the writer's account of this organism entitled "Bacillus 

 phytophthorus Appel," in Science, N. S., Vol. XXXI, May 13, 1910, 

 pp. 748-751 ; Morse's paper in Journal of Agricultural Research, 

 Jan. 15, 1917, p. 79; also Morse's earlier paper, Bull. No. 174, 

 Maine Agr. Exp. Sta., Dec. 1909; and Rosenbaum and Ramsey's 

 paper on "Influence of Temperature and Precipitation on the 

 Blackleg of Potato," Journal of Agricultural Research, Vol. 

 XIII, No. 10, Washington, D. C, June 3, 1918, pp. 507-513. 



For reference to the paper by Pethybridge and Murphy see 

 the foot note on page 64. 



The name Bacillus phytophthorus was first published by 

 Dr. Appel in 1902, in Ber. d. d. Bot. Ges., XX Band, Heft. 2, 

 pp. 128-129. Note read Feb . 28 and Heft published March 27. 



