Go 
‘oO 
a 
[~) 
as 
= 
THOMAS: INFECTION OF APIUM GRAVEOLENS 29 
- Rogers, S.S. The late blight of celery. California Agr. Exp. Sta. 
Bull. 208: 83-115. f. 1-17. 1911. 
- Rolfs, P.H. Subtropical vegetable gardening. New York. 1916. 
- Rostrup, E. Gardners’ Tidende 1893, p. 180. [Original not seen.] 
. Salmon, E. S. Celery blight or rust (Septoria Petroselini var. 
Apit) and its prevention. Gard. Chron. 53: 414-416. f. 176- 
181;-54: 3-4. f..4. 
I 
. Sorauer, P. Die Fleckenkrankheit des Selleries. Zeitschr. Pflan- 
zenkr. 6: 191-192. 1896. 
Handbuch der Pflanzenkrankheiten. 1: 664, Berlin. 1909. 
. Spinks, G. T. Factors affecting susceptibility to disease in plants. 
Part I. Jour. Agr. Sci. 5: 231-247. 1913. 
. Stakman, E. C. A study in cereal rusts. Physiological races. 
Part I. Biologic forms. Minnesota Agr. Exp. Sta. Bull. 138 
5-56. pl. 7-9. 1914. 
. Stout, A. B. A Sclerotium disease of blue joint and other grasses. 
Wisconsin Agr. Exp. Sta. Research Bull. 18: 207-261. f. 1-8, 
IQII. 
. Ward, H. M. Experiments on the effect of mineral starvation 
on the parasitism of the uredine fungus Puccinia dispersa on 
species of Bromus. Proc. Roy. Soc. Lond. 71: 138-151. f. I-4. 
1902. 
. Watts, R. L. Vegetable gardening. New York. 1918. 
. White, T. H. Variety tests of potatoes, tomatoes, cabbage and 
other vegetables. Maryland Agr. Exp. Sta. Bull. 204. 246: 247. 
1917. 
. Zobel, H. F. Celery diseases. Gard. Chron. 55:95. 1914. 
