2i6 Journal of Agricultural Research voi. v. no.s 



(3) The infection capabilities of timothy rust are quite similar to those 

 of Pticcinia graminis avenae. 



(4) Attempts to infect timothy with Puccinia graminis avenae and 

 Puccinia graminis Iiordei were unsuccessful. 



(5) The morphology of the spores of timothy rust on different hosts 

 varies slightly; spores produced on barley were considerably smaller 

 than those produced on more congenial hosts. 



LITERATURE CITED 

 (i) Carleton, M. a. 



1899. Cereal rusts of the United States; a physiological investigation. U. S. 

 Dept. Agr. Div. Veg. Physiol, and Path. Bui. 16, 74 p., i fig., 4 col. pi. 

 Bibliography, p. 70-73. 

 (2) Eriksson, Jakob, and Henning, Ernst. 



1894. Die Hauptresultate einer neuen Untersuchung iiber die Getreideroste . 

 In Ztschr. Pflanzenkrank., Bd. 4, p. 66-73, i4<>-i42, 197-203, 257-262. 



(3) 



1896. Die Getreideroste ... 463 p., 13 col. pi. Stockholm. 



(4) Johnson, E. C. 



191 1. Timothy rust in the United States. U. S. Dept. Agr. Bur. Plant Indus. 

 Bui. 224, 20 p. 



(5) Kern, F. D. 



1909. The rust of timothy. In Torreya, v. 9, no. i, p. 3-5. 



(6) 



1910. Further notes on timothy rust. /wProc. Ind. Acad. Sci., 1909, p. 417-418. 



(7) Mercer, W. H. 



1914. Investigations of timothy rust in North Dakota diuing 1913. In Phyto- 

 pathology, V. 4, no. I, p. 20-22. 



