614 BULLETIN 347 
Heald, F. D. . =e 
1913 a The symptoms of chestnut tree blight and a brief description of 
the blight fungus. Pennsylvania Chestnut Tree Blight Com. 
Bul. 5:1-15. 
Illustrated with sixteen good plates. 
1913 b A method of determining in analytical work whether colonies 
of the chestnut blight fungus originate fram pycnospores or 
ascospores. Mycologia 5:274-277. 
Heald, F. D., and Gardner, M. W. 
1913 a Preliminary note on the relative prevalence of pycnospores and 
ascospores of the chestnut-blight fungus during the winter. 
Science 3'7:916-917. 
Authors found that large numbers of pycnospores were washed down the 
trunks during winter rains, but no ascospores. 
1913 b The relative prevalence of pycnospores. and ascospores of the 
chestnut blight fungus during the winter. Phytopath. 3:296- 
05. 
Re annotation under above. 
Heald, F. D., Gardner, M. W., and Studhalter, R. A. 
1914 Wind dissemination of ascospores of the chestnut blight fungus. 
‘Phytopath. 4:51. 
Abstract of paper read before the American Phytopathological Society, 
December, 1913. Authors prove that spores are blown more than three 
hundred and eighty feet from diseased trees. 
Heald, F. D., and Studhalter, R. A. 
1913 Preliminary note on birds as carriers of the chestnut blight 
fungus. Science 38: 278-280. 
: Authors were able to isolate large numbers of spores from birds that were 
shot. 
Hodson, E. R. 
1908 Extent and importance of the chestnut bark disease. U. S. 
Forest Service. Unnumbered circular, p. 1-8. 
Discusses symptoms, distribution, dissemination, damage, utilization, 
; and measures of exclusion and eradication. 
Hohnel, Fr. von 
1909 Fragmente zur mykologie. K. Akad. Wiss. [Wien.] Sitzber. 
118:2:1479-1481. 
States that Valsonectria is synonymous with Endothia, and that the 
chestnut-blight fungus is identical with Endothia gyrosa (Schw.) Fuckel. 
Keefer, W. E. 
1914 Pathological histology: of the Endothia canker of chestnut. 
Phytopath. 4:191-200. 
Merkel, Hermann W. 
1906 A deadly fungus on the American chestnut. New York Zool. 
Soc. Ann. rept. 10: 97-103. ; 
First publication regarding occurrence of the disease in America. De- 
scribes symptoms and spraying experiments. 
Metcalf, Hayen 
1908 a The immunity of the Japanese chestnut to the bark disease. 
U.S. Plant Indus. Bur. Bul. 121: 55-56. 
Gives distribution of the disease, believes the Japanese chestnut to be the 
only immune variety, and suggests that the fungus may have been introduced 
from Japan. 
