34 MISC. PUBLICATION 5 41, U. S. DEPT. OF AGRICULTURE 



(23) Elliott, J. A. 



1925. A CYTOLOGICAL STUDY OF CERATOSTOMELIA FIMBRIATA (E. & H. ) . 



Phytopathology 15 : 417-422, illus. 



(24) Eriksson, J. 



1918. ZUR ENTWICKELUNGSGESCHICHTE DES SPINATSCHIMMELS. Al'kiv f6l* 



Bot. 15: 1-25. 



(25) Erwin, A. E. 



1921. CONTROLLING DOWNY MILDEW OF LETTUCE. Iowa Agr. Expt. Sta. 



Bul. 196, pp. [307J-328, illus. 



(26) Gallagher, P. H. 



1929. THE RELATION BETWEEN PHOMA OR CROWN ROT IN BEET AND SOIL 



reaction. Irish Free State Dept. Agr., Jour. 29: 63-74, illus. 



(27) Gardner, M. W., Tompkins, C. M., and Thomas, H. R. 



1937. factors affecting the prevalence of the spotted wilt virus. 

 (Abstract) Phytopathology 27: 129. 



(28) Tompkins, C. M., and Whipple, O. C. 



1935. spotted wilt of truck crops and ornamental plants. (Abstract) 

 Phytopathology 25: 17. 



(29) and Whipple, O. C. 



1934. spotted wilt of tomatoes and its transmission by thrtps. (Ab- 

 stract) Phytopathology 24: 1136. 



(30) Glasscock, H. H., and Ware, W. M. 



1939. heterosporium leaf spot of spinach. Gard. Chron. 106 : 100-102, 

 illus. 



(31) Godfrey, G. H. 



1923. a phytophthora footrot of rhubarb. Jour. Agr. Res. 23: 1-26, 

 illus. 



(32) Harding, H. A., Morse, W. J., and Jones, L. R. 



1909. the bacterial soft rots of certain vegetables. N. Y. State Agr. 

 Expt. Sta. Tech. Bul. 11, pp. [251] -368, illus. [Also Vt. Agr. 

 Expt. Sta. Bul. 147, pp. 243-360, iilus. 1910.] 



(33) Harris, M. R. 



1939. A survey of the spotted wilt disease of lettuce in THE SALINAS 

 valley. Calif. Dept. Agr., Monthly Bul. 28 : 201-213, illus. 



(34) Harter, L. L. 



1913. the foot-rot of the sweet potato. Jour. Agr. Res. 1 : 251-274, 

 illus. 

 (35) 



(36) 

 (37) 



1916. sweet-potato diseases. U. S. Dept. Agr. Farmers' Bul. 714, 26 

 pp., illus. 



1916. sweet-potato scurf. Jour. Agr. Res. 5 : 787-791, illus. 



1924. pythium rootlet rot of sweet potatoes. Jour. Agr. Res. 29 : 53- 

 55, illus. 

 (3S) and Field, E. C. 



1913. A DRY ROT OF SWEET POTATOES CAUSED BY DIAPORTHE BATATATIS- 



U. S. Bur. Plant Indus. Bul. 281, 38 pp., illus. 



(39) and Field, E. C. 



1914. THE STEM-ROT 'OF THE SWEET POTATO (iPOMOEA BATATAS ). Phyto- 



pathology 4 : 279-304, illus. 



(40) and Field, E. C. 



1915. EXPERIMENTS ON THE SUSCEPTIBILITY OF SWEET POTATO VARIETIES TO 



stem rot. Phytopathology 5 : 163-168. 



(41) Lauritzen, J. I., and Weimer, J. L. 



1923. INTERNAL BREAKDOWN OF SWEET POTATOES. Phytopathology 13 : 146- 



147. 



(42) Lauritzen, J. I., and Weimer, J. L. 



1923. mottle-necrosis of sweet potatoes. Phytopathology 13 : 145-146, 

 illus. 



(43) and Weimer, J. L. 



1919. the surface rot of sweet potatoes. Phytopathology 9 : 465-469, 



illus. 



(44) ■ and Weimer, J. L. 



1920. sweet potato stem-rot and tomato wilt. Phytopathology 10: 



306—307. 



