Add to ORKG838 Phytopathology [Vol. 32 of the identity and relationships of the various forms and species. Nor can we measure the results merely by reviewing his own publications but must take into consideration how he reached out into the lives of his students, his assistants, his correspondents, and his colleagues, spurring them on to an ever widening circle of activities. Some of his associates, who in their own turn have been active, have already been named as collaborators in the book on The Plant Rusts. We would fail if we did not name Bolley, Olive, Whetzel, Johnson (A. G.), Christman, Dodge, Garrett, Bethel, Holway, Rosen, Stevens (F. L.), Clinton, Kunkel, Thurston, and Cummins, who were influenced either directly or indirectly. There are many...