66 MISCELLANEOUS PUBLICATION NO. 725, U.S. DEPARTMENT OF AGRICULTURE 
Hepting, George H., and Toole, E, Richard, 
1948, Wilt epidemiology and resistance in the mimosa tree, 
(Abstract) Phytopathology 38: 13, 
Hepting, George H., and Toole, E, Richard, 
1950. Some southeastern tree diseases--1948 and 1949, 
U. S. Bur. Plant Indus. , ‘Soils; andiAgr. Engin: 
Plant Dis. Rptr. 34: 135-137. [Processed. ] 
Hepting, George H:, Toole,-K, Richard, and) Boyce, John)o. 51a. 
1951, Perithecia produced in an unpaired isolate of 
Chalara quercina and its possible significance 
in oak wilt control, U.S: sBurs Plant Indus. 
Soils, and Agr...Engin,, Plant Dis. Rptr. 35: 
555. [Processed, | 
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Hepting, George H., Toole, E, Richard, and Boyce, JohnS.,, Jr. 
1952. Sex and compatibility in the oak wilt fungus. U. S. 
Bur, Plant Indus.,, Soils,.and Agr. Engin, , Plant 
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Hepting, George H., Toole, E, Richard, and Boyce, John S,, Jr. 
1952. Sexuality in the oak wilt fungus, Phytopathology 42: 
438-442, illus, 
Hepting, George H., and [Vaughn], Dorothy Blaisdell, 
1936, A protective zone in red gum fire scars, Phyto- 
pathology 26: 62-67, illus, 
Hirt, “Ray Re 
1936. The progress of blister rust in planted northern 
white pine, Jour. Forestry 34: 506-511, illus. 
Hirt,;Ray Re 
1936, A simple device for recording the time and duration 
of rainfall, Phytopathology 26: 1064-1067. 
Hirt, Ray R. 
1938, Relation of stomata to infection of Pinus strobus by 
Cronartium ribicola, Phytopathology 28: 180-190, 
illus, 
Hirt, Raye 
1939. Canker development by Cronartium ribicola on young 
Pinus strobus, Phytopathology 29: 1067-1076, 
illus, 
Hirt, Ray R. 
1949, The development of blister rust on young planted 
northern white pine, Jour, Forestry 37: 967-969, 
illus, 
Hirt, Ray R: 
1940, Relative susceptibility to Cronartium ribicola of 5- 
needled pines planted in the East, Jour, Forestry 
S85 932-9375 
Hirt, Ray R. 
1942, The relation of certain meteorological factors to 
the infection of eastern white pine by the blister- 
rust fungus, N. Y. State Col, Forestry, Syracuse 
Univ. ; “Bulis 59365 pp, abluse 
Hirt, Ray R. 
1944, Distribution of blister-rust cankers on eastern white 
pine according to age of needle-bearing wood at 
time of infection, Jour. Forestry 42: 9-14, 
Hirt, RiayiyR: 
1944, Moisture content of wood boats. U. S. Bur. Plant 
Indus,, Soils, and Agr, Engin, , Forest Path, 
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