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NOTE. 



Since this paper was revised the writer by culture experi- 

 ments during the early summer of 1912 established the life 

 history. of, several of, the .fern rusts of the .genus Uredinopsis+ 

 These experiments have, shown . .that Uredinopsis Osmundae 

 Magn., U. Struthiopteridis Stormer, U. Fhegopteridis Arthur, 



