Feb. 16, 1924 
489 
Flag Smut of Wheat 
(43) Stakman, E. C. 
1913. spore germinations of cereal smuts. Minn. Agr. Exp. Sta. Bui. 
J 33 » 77 P*, 2 5 pi* Bibliography, p. 46-48. 
(44) -- 
1915. RELATION BETWEEN PUCCINIA GRAMINIS AND PLANTS HIGHLY RESISTANT 
TO ITS attack. In Jour. Agr. Research, v. 4, p. 193-200, pi. 28. Liter¬ 
ature cited, p. 198-199. 
(45) - 
1922. DISEASES OF CEREAL AND FORAGE CROPS IN THE UNITED STATES IN I92I. 
In U. S. Dept. Agr., Bur. Plant Indus., Plant Disease Surv. Bui. 
Sup. 21, p. 139-254. (Mimeographed.) 
(46) Stiles, Walter. 
1921. permeability. In New Phytol., v. 20, p. 45-55. 
(47) Sydow, H., Sydow, P., and Butler, E. J. 
1906. fungi indiae orientalis. In Ann. Mycol., Jahrg. 4, p. 424-445. 
(48) Thiel, A. F., and Weiss, Freeman. 
1920. THE EFFECT OF CITRIC ACID ON THE GERMINATION OF THE TELIOSPORES 
of puccinia graminis TriTici. In Phytopathology, v. 10, p. 448- 
452, 1 fig. Literature cited, p. 452. 
(49) Tisdale, W\ H., Dungan, G. H., and Leighty, C. E. 
1923. flag smut of wheat. U. S. Dept. Agr. Circ. 273, 6 p., 2 pi. 
( 5 °)- 
1923. FLAG SMUT OF WHEAT. WITH SPECIAL REFERENCE TO VARIETAL RESIS¬ 
TANCE. Ill. Agr. Exp. vSta. Bui. 242, p. 507-538, 3 fig. Literature 
cited, p. 53S. 
(51) -and Griffiths, Marion A. 
1921. flag smut OF wheat and its control. U. S. Dept. Agr. Farmers’ 
Bui. 1215, 0 p., 3, fig. 
(52) Walker, J. C., and Jones, L. R. 
1921. RELATION OF SOIL TEMPERATURE AND OTHER FACTORS TO ONION SMUT 
infection. In Jour. Agr. Research, v. 22, p. 235-262, 2 fig., pi. 25- 
27. Literature cited, p. 261. 
(53) Waterhouse, W. L. 
1921. STUDIES IN THE PHYSIOLOGY OF PARASITISM. VII. INFECTION OF BERBERIS 
VULGARIS BY SPORIDIA OF PUCCINIA GRAMINIS. Ill Ann. Bot., V. 35, 
p. 557 - 564 > 19 kg- References, p. 563-564. 
(54) Webb, Robert W. 
1921. STUDIES IN THE PHYSIOLOGY OF THE FUNGI. XV. GERMINATION OF 
THE SPORES OF CERTAIN FUNGI IN RELATION TO HYDROGEN-ION CON¬ 
CENTRATION. In Ann. Mo. Bot. Gard., v. 8, p. 283-341, 39 fig. Bibli¬ 
ography, p. 340-341. 
(55) Whitehead, T. 
1921. ON THE LIFE HISTORY AND MORPHOLOGY OF UROCYSTIS CEPULAE. In 
Britt. Mycol. vSoc. Trans., 1920, v. 7, p. 65-71, pi. 2. Bibliography, 
p. 70. 
(56) Wilson, Robert E. 
1921. HUMIDITY CONTROL BY MEANS OF SULPHURIC ACID SOLUTIONS, WITH 
CRITICAL COMPILATION OF VAPOR PRESSURE DATA. In Jour. Indus, 
and Engin. Chem., v. 13, p. 326-331, 2 fig. Bibliographical footnotes. 
(57) Wolff, Reinhold. 
1873. beitrag zur kenntniss der ustilagineen. In Bot. Ztg., Jahrg. 31, 
p. 657-661. 673-677, 689-694, pi. 7. 
(58) Woolman, H. M. 
1923. CYTOLOGICAL STUDIES ON THE INFECTION OF WHEAT SEEDLINGS BY TIL- 
LETIA tritki (bjerk.) wint. (Abstract.) In Phytopathology, v. 13, 
P- 36-37* 
