LITERATURE CITED. 



(1) Bessey, C. E. 



1877. On injurious fungi. The blights (Erysiphe). In Bienn. Rpt. 

 Iowa Agr. Coll., 1876-77, pp. 185-204, 2 pi, 



(2) Ellis, J. B., and Evekhabt, B. M, 



1888. New species of fungi from various localities. In Jour. Mycol., 

 V. 4, no. 6, pp. 49-59. (Continued article.) Sphaerotheca leuco- 

 triclia E. and E., p. 58. 



(3) Galloway, B. T. 



1889. Apple powdery mildew. In U. S. Dept. Agr., 1st Rpt., 1889, 

 pp. 414-415. 



(4) 1889. Experiments in the treatment of pear-leaf blight and the apple 



powdery mildew. U. S. Dept. Agr., Sec. Veg. Path. Circ. 8, 11 p., 

 2 fig. 



(5) Burrill, T. J.' 



1892. Sphraerotheca mali. In Ellis, J. B., and Everhart, B. M, North 

 American Pyrenomycetes, pp. 5-6. Newfield, N. J. 



(6) Pammel, L. H. 



1894. Notes on a few common fungus diseases. In Iowa Agr. Exp. 

 Sta. Bui. 23, pp. 918-924, 2 figs. 



(7) Groltt, a. J. 



1899. A little-known mildew of the apple. In Bui. Torrey Bot. Club. 

 V. 26, no. 7, pp. 373-375, pi. 364. 



(8) Pammel, L. H. 



1900. Powdery mildew of the apple. In Proc. Iowa Acad. Sci., v, 7, 

 1899, pp. 177-182, pis. 33=^35. 



(9) Salmon, E. S. 



1900. A Monograph of the Erysiphacese. Mem. Torrey Bot. Club, v. 9, 

 292 p., 9 pi. Bibliography, pp. 241-259. 



(10) Lawrence, W. H. 



1905. The powdery mildews of Washington. Wash. Agr. Exp. Sta. 

 Bui. 70, 16 pp., 1 pi. 



(11) Stewart, F. C. 



1910. Notes on New York plant diseases. — I. N. Y. Geneva Agr. 

 Exp. Sta. Bui. 328, pp. 305^04, 18 pi. Bibliography, pp. 399-404. 



(12) Ballard, W. S., and Volck, W. H. 



1914. Apple powdery mildew and its control in the Pajai'o Valley. 

 U. S. Dept. Agr. Bui. 120, 26 pp., 5 fig., 6 pi. 



(13) Eyre, J. V., and Salmon, E. S. 



1916. Fungicidal properties of certain spray fluids. In Jour. Agr. Sci., 

 V. 7, pt. 4, pp. 473-507. 



(14) Hundley, J. B. 



1917. Sulphur injury in Yucaipa, 1917. In Mo. Bui. Cal. State Comm, 

 Hort., V. 6, no. 10, pp. 402-403. 



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WASHINGTON : GOVERNMENT PRINTING OFFICE : 1918 



