ioi8 
Journal of Agricultural Research voi. xxiv, No. 12 
(6) Mains, E. B., and Jackson, H. S. 
1921. TWO STRAINS OR PUCCINIA TRITICINA ON WHEAT IN THE UNITED STATES. 
(Abstract.) In Phytopathology, v. ii, p. 40. 
(7) Melchers, Leo E., and Parker, John H. 
1918. another STRAIN OP PUCCINIA GRAMiNis. Kans. Agf. Exp. Sta. Circ. 
68, 4 p. 
(8) Stakman, E. C., and Levine, M. N. 
1919. EPPECT OP certain ecoeogicae pactors on the morphoeogy op the 
UREDINIOSPORES OP PUCCINIA GRAMINIS. In Joiir. Agr. Research, v. 
16, p. 43-'77. Literature cited, p. 77. 
(9) - 
1922. THE determination op BIOEOGIC PORMS op PUCCINIA GRAMINIS ON 
TRiTicuM spp. Minn. Agr. Exp. Sta. Tech. Bui. 8 , 10 p., i fig. 
(10) -and Leach, J. G. 
1919. NEW BIOEOGIC PORMS OP PUCCINIA GRAMINIS. In Jour. Agr. Research, v, 
16, p. 103-105. 
(11) -and PiEMEiSEE, F. J. 
1917. A NEW STRAIN OP PUCCINIA GRAMINIS. (Abstract.) In Phytopathology, 
V. 7 » P- 73 - 
(12) -and Levine, M. N. 
1918. PEASTICITY OP BIOEOGIC PORMS OP PUCCINIA GRAMINIS. In JoUT. Agr. 
Research, v. 15, p. 221-250, pi. 17-18. Literatme cited, p. 248-249. 
