172 Journal of Agricultural Research voi. xix,no.4 



The organism isolated and described by the writer has the group 

 number 221.2323023. No other white organism used by the writer 

 has produced anything similar to the halo lesions. Other white organ- 

 isms have in fact produced no lesions on oats. Three strains of softrot 

 organisms with internal markings very much like those of oat colonies 

 have been used, and also the white organism, Bacterium atrojaciens McC, 

 which produces lesions on wheat. The name of Bacterium coronafaciens 

 n. sp. is suggested for this white halo-producing organism. 



Treatment with i to 320 formalin, as for smut, checks but does not 

 entirely control the disease. A hot-air treatment for 30 hours at 100° 

 C. does control the blight. 



LITERATURE CITED 

 i) Galloway, B. T., and Southworth, E. A. 



1890. PRELIMINARY NOTES ON A NEW AND DESTRUCTIVE OAT DISEASE. In 



Jour. Mycol., v. 6, no. 2, p. 72-73. 



2) Jones, L. R., Johnson, A. G., Reddy, C. S. 

 1917. BACTERIAL BLIGHT OF BARLEY. In Jotir. Agr. Research, v. 11, no. 12, 



p. 625-644, illus., 4 pi. (i col.). Literature cited, p. 643. 



3) Manns, Thomas F. 



1909. THE BLADE BLIGHT OF OATS, A BACTERIAL DISEASE. Ohio Agr. Exp. 



Sta. Bui. 210, 167 p., illus., 15 pi. Literature cited, p. 166. 



4) Rosen, H. R. 



I919. A PRELIMINARY NOTE ON A BACTERIAL. DISEASE OF FOXTAIL. In Science, 



n. s. V. 49, no. 1264, p. 291. 



5) Smith, Erwin F. 



1905. bacteria IN relation to plant diseases, v. I. Washington, D. C. 

 (Carnegie Inst. Washington Pub. 27.) 



1917. BLACK CHAFF OF WHEAT. In U. S. Dept. Agr. Bur. Plant Indus. 

 Plant Disease Survey Bui. 2, p. 40. 



1917. A NEW disease OF WHEAT. /« JouT. Agr. Research, V. lo, no. I, p. 51-54, 

 pi. 4-8. 



1918. BLACK CHAFF OF WHEAT. In U. S. Dcpt. Agr. Bur. Plant Indus. Plant 



Disease Stu^ey Bui., v. 2, no. 6, p. 98-99. 



9) Jones, L. R., and Reddy, C. S. 



1919. THE BLACK CHAFF OF WHEAT. In Science, n. s. v. 50, no. 1280, p. 48. 



10) Wolf, F. A., and Foster, A. C. 



1918. TOBACCO wildfire. Ill Jout. Agr. Research, v. 12, no. 7, p. 449-458, 

 illus., pi. 15-16. 



