May 19,1923 
Statistical Stvdy of Biologic Forms 
5^7 
LITERATURE CITED 
(1) Babcock, Ernest Brown, and Clausen, Roy Elwood. 
1918. GENETICS IN RELATION TO AGRICULTURE. XX, 675 p., 239 fig., 4 Col. pi. 
New York, London. List of literature cited, p. 622-647. 
(2) Davenport, Eugene. 
1907. PRINCIPLES op breeding. 727 p., illus. Boston, New York. 
(3) Eriksson, Jakob, and Henning, Ernst. 
1896. DIE GETREiDEROSTE . . . vii, 464 p., 5 fig., 13 col. pi. Stockholm. 
Litteraturverzeichnis, p. 446-457. 
(4) Freeman, E. M., and Johnson, Edward C. 
1911. THE RUSTS OP grains IN THE UNITED STATES. U. S. Dept. Agr. Bur. 
Plant Indus. Bui. 216, 87 p., 2 fig., i pi. Bibliography, p. 79-82. 
( 5 ) McAlpine, D. 
1906. THE RUSTS op AUSTRALIA, vi, 349 p., 55 pi. Melbourne. Literature, 
p. 213-22I. 
(6) Pearl, Raymond, and Miner, John Rice. 
1914. A table POR estimating the probable SIGNIPICANCE OP STATISTICAL 
constants. In Maine Agr. Exp. Sta. Bui. 226, p. 85-88. 
(y) -and SuRPACE, Frank M. 
1909. A BIOMETRICAL STUDY OP EGG PRODUCTION IN THE DOMESTIC POWL. I. 
VARIATION IN ANNUAL EGG PRODUCTION. In U. S. Dept. Agr. Bur. 
Anim. Indus. Bui. no, p. 1-80, 17 fig. 
(8) Plowright, Charles B. 
1889. A MONOGRAPH OP THE BRITISH UREDINEAE AND USTILAGINEAE . . . 
vii, 347 p., 13 fig., 8 pi. London. Authors quoted, p. 309-315. 
(9) Rietz, Henry L., and Smith, Louie H. 
1910. ON THE MEASUREMENT OP CORRELATION WITH SPECIAL REPERENCE TO 
SOME CHARACTERS OP INDIAN CORN. Ill. Agr. Exp. Sta. Bul. 148, p. 
291-316, s fig- 
(10) Rosenbaum, J. 
1917. studies op the GENUS PHYTOPHTHORA. In Jour. Agr. Research, v. 8, 
p. 233-276, 13 fig., pi. 71-77. Literature cited, p. 273-276. 
(11) Saccardo, P. a. 
1888; 1895. SYLLOGE pungorum ... V. 7; V. II. Patavii. 
(12) Stakman, E. C. 
1914. A STUDY IN cereal RUSTS I PHYSIOLOGICAL RACES. Minn. Agr. Exp. Sta. 
Bul. 138, 56 p., 9 pi. Bibliography, p. 50-54. 
(13) -and Jensen, Louise. 
1915. inpection experiments with TIMOTHY RUST. In Jour. Agr. Research, 
V. 5, p. 211-216. Literature cited, p. 216. 
( 14 ) -and Levine, M. N. 
1919. EPPECT OP CERTAIN ECOLOGICAL PACTORS ON THE MORPHOLOGY OP THE 
urediniospores op puccinia graminis. In Jour. Agr. Research, v. 
16, p. 43-77. Literature cited, p. 77. 
(15) Sydow, P., and Sydow, H. 
1904. monographia uredinEarum ... V. I. Lipsiae. 
