Apr. 15, 1914 
Pycnospores of Chestnut-Blight Fungus 
75 
uninfected and hence pass inspection as free from disease, the spores 
having been washed into the soil from diseased parts pruned from the 
specimens before shipment pr from diseased plants which were adjacent 
to the healthy specimens in the nursery. Under such conditions it is 
evident that large numbers of pycnospores might retain their viability 
during long periods of shipment. 
LITERATURE CITED 
Cousins, J. F. 
1912. The chestnut bark disease. Northern Nut Growers Assoc. Rpt. 2d Ann. 
Meeting, 1911, p. 46. 
Heald, F, D. 
1913a. A method of determining in analytic work whether colonies of the chestnut 
blight fungus originate from pycnospores or ascospores. Mycologia, v. 5, 
no. 5, p. 274-277, pi. 98-101. 
1913b. Symptoms of the chestnut tree blight and a brief description of the blight 
fungus. Penn. Chestnut Tree Blight Com. Bui. 5, p. 8. 
-and Gardner, M. W. 
1913a. Preliminary note on the relative prevalence of pycnospores and ascospores 
of the chestnut blight fungus during the winter. Science, n. s., v. 37, 
no. 963, p. 916-917. 
1913b. The relative prevalence of pycnospores and ascospores of the chestnut 
blight fungus during the winter. Phytopathology, v. 3, no, 6, p. 296- 
305, pi. 26-28. 
-AND STUDHAETER, R. a. 
1913. Preliminary note on birds as carriers of the chestnut blight fungus. Science, 
n. s., v. 38, no. 973, p. 278-280. 
Metcale, Haven, and Coluns, J. F. 
1911. Control of the chestnut-bark disease. U. S. Dept. Agr. Farmers' Bui. 
467* P- 19* 
