56 MISCELLANEOUS PUBLICATION NO. 725, U.S. DEPARTMENT OF AGRICULTURE 
Heald, F. D., and Gardner, M. W. 828 
1913. Preliminary note on the relative prevalence of 
pycnospores and ascospores of the chestnut blight 
fungus during the winter. Science 37: 916-917. 
Heald, F. D., and Gardner, M. W. 829 
1913. The relative prevalence of pycnospores and ascospores 
of the chestnut blight fungus during the winter. 
Phytopathology 3: 296-305, illus. 
Heald, F. D., and Gardner, M. W. 830 
1914. Longevity of pycnospores of the chestnut-blight fungus 
in soil’ Joun. AgrioRes:; 2: -Ovj-"5- 
Heald, F. D., Gardner, M. W., and Studhalter, R. A. 831 
1915. Air and wind dissemination of ascospores of the 
chestnut-blight fungus. Jour. Agr. Res. 3: 
493-526, illus. 
Heald, F. D., and Studhalter, R. A. 832 
1913. Preliminary note on birds as carriers of the chest- 
nut blight fungus. Science 38: 278-280. 
Heald, F. D., and Studhalter, R. A. 833 
1914. Birds as carriers of the chestnut-blight fungus. 
Jour. Agr. Res. 2: 405-422, illus. 
Heald, F. D., and Studhalter, R. A. 834 
1914. The Strumella disease of oak and chestnut trees. 
Pa. Dept. Forestry Bul 10, -)5 ppz; thlus:. 
Heald, F. D., and Studhalter, R. A. 835 
1915. The effect of continued desiccation on the expulsion 
of ascospores of Endothia parasitica. Mycologia 
7 U26=130. 
Heald, F. D., and Studhalter, R. A. 836 
1915. Longevity of pycnospores and ascospores of Endothia 
parasitica under artificial conditions. Phyto- 
pathology 5: 35-44, illus. 
Heald, F. D., and Studhalter, R. A. 837 
1915. Seasonal duration of ascospore expulsion of Endothia 
parasitica. Amer. Jour. Bot. 2: 429-448. 
Heald, F. D., and Walton, R. C. 838 
1914. The expulsion of ascospores from the perithecia of 
the chestnut blight fungus, Endothia parasitica 
(Murr.) And. Amer. Jour. Bot. 1: 499-521, illus. 
Hedgcock, George G. 839 
1904. A note on Rhizoctonia. Science 19: 268. 
Hedgcock, George G. 840 
1906. Ring formation in artificial cultures. Science 23: 203. 
Hedgcock, George G. 841 
1906. Some wood staining fungi from various localities in 
the United States. Jour. Mycol. 12: 204-210. 
Hedgcock, George G. 842 
1906. Studies upon some chromogenic fungi which discolor 
wood. Mo. Bot. Gard. Rpt. 17: 59-114, illus. 
Hedgcock, George G. 843 
1906. Zonation in artificial cultures of Cephalothecium and 
other fungi. Mo. Bot. Gard. Rpt. 17: 115-117, 
illus. 
Hedgcock, George G. 844 
1908. The cross inoculation of fruit trees and shrubs with 
crown-gall. U. S. Bur. Plant Indus. Bul. 131 (3): 
21-23. 
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