130 James G. Horsfall 



Johnson, A. G., and Hungerford, C. W. Scolecolrichum graminis on 

 timothy, orchard grass, and other grasses. Phytopath. 7:69. 1917. 



Johnson, Edward C. Timothy rust in the United States. U. S. Plant 

 Indus. Bur. Bui. 224 : 1-20. 1911. 



Johnson, James. The relation of air temperature to the mosaic disease 

 of potatoes and other plants. Phytopath. 12:438-440. 1922. 



Jones, Fred Reuel. Pleosphaerulina on alfalfa. Phytopath. 6:299-300. 

 1916. 



The leaf-spot diseases of alfalfa and the red clover caused 





by the fungi Pseudopeziza medicaginis and Pseudopeziza trifolii, 

 respectively. U. S. Agr. Dept. Bui. 759 : 1-38. 1919. 



Jones, L. R., Williamson, Maude Miller, Wolf, F. A.,andMcCullock, 

 Lucia. Bacterial leafspot of clovers. Journ. agr. research 25:471- 

 490. 1923. 



J'^rstad, I. Beretning om plantesydommer i land og havebruket 

 1922-23. IV. Landbruksvekster og grcpnnsaker, p. 1-39. [Report 

 on agricultural and horticultural plant diseases 1922-23. IV. 

 Agricultural crops and vegetables.] (Abstr. in Rev. appl. mycol. 

 4:16-18. 1925.) 1924. 



Karakulin, B. P. [Russian title. 1 On the question of the systematic 

 position of fungi belonging to the type of Exobasidiopsis mihi. Bot. 

 Mat. Inst. Crypt. Plants. Not. System er Inst. Crypt. Horti. Bot. 

 Petropoli. Chief Bot. Gard. Russian Republic 2:7:101-108. (Abstr. 

 in Rev. appl. mycol. 4:129-130. 1925.) 1923. 



Kern, Frank D. The rust of timothy. Torreya 9:3-5. 1909. 



Further notes on timothy rust. Indiana Acad. Sci. Proc. 



1909:417-418. 1910. 



The rusts of white and red clover. Phytopath. 1 : 3-6. 1911. 



Kightlinger, C. V. Preliminary studies on the control of cereal rusts 

 by dusting. Phytopath. 15:611-613. 1925. 



Killian, C. Le Polythrincium trifolii Kunze, parasite du trefie. Rev. 

 path. veg. et ent. agr. 10:202-219. (Translation available in the 

 library of the Department of Plant Pathology at Cornell University.) 

 1923. 



