CULTURES OF UREDINEAE IN 1912, 1913 
AND 1914/ 
J. C. Arthur 
The present article is the thirteenth of a series of reports^ by 
the writer upon the culture of plant rusts, beginning in 1899 and 
completing sixteen consecutive years. The work for the three 
years covered by the present report has been done under the aus- 
pices of the Indiana Experiment Station, as a part of a research 
project supported by the Adams Fund. 
The heaviest part of the work each year falls in April and May, 
and during this time the regular staff of the botanical department 
of the Experiment Station is supplemented in order to take care 
of the largely increased routine part of the work. In 1912 the 
assistant for the culture work was Mr. L. O. Overholts, a senior 
student of Miami University, Ohio, recommended by Dr. Bruce 
Fink; in 1913 Mr. Ezra Levin, junior student with credits at the 
Agricultural College of Michigan, recommended by Dr. Ernst A. 
Bessey, was in charge; and in 1914 Mr. Carl B. Gibson, senior 
student of Wabash College, Indiana, recommended by Prof. 
H. W. Anderson, did the work. 
A large number of correspondents have assisted as in prev- 
ious years by sending culture material, often by supplying informa- 
tion from field observations, and sometimes by making special 
trips to secure additional material or search for cultural clues. 
To all such persons, and especially to those who have been to 
trouble and expense in response to the wishes of the writer for 
local aid, the most hearty thanks are accorded. Without the as- 
sistance of observers in the field, the work of situdying the life 
histories of the rusts extending over the vast territory of North 
1 Presented before the Botanical Society of America at the Philadelphia 
meeting, December 29, 1914. 
2 See Bot. Gaz. 29: 268-276; 35; 10-23; Jour. Myc. 8: 51-56; 10; 8-21; 
II : 50-67; 12: 11-27; 13: 189-205; 14: 7-26; Mycol. i: 225-256; 2: 213-240; 
4 : 7-33, 49-65. 
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