64 BOTANICAL GAZETTE [row 
account of the downy mildew of the lima bean, due to Phytophthora phaseoli, 
and of the downy mildew or blight of the Irish potato, due to Phytophthon 
injestans. ‘The two latter diseases are fully described and illustrated, and cita- 
tions of the literature of each disease are given. 
WHETZEL” gives an illustrated account of the following bean diseases found 
in New York state: anthracnose, due to Colletotrichum lindemuthianum; blight, 
due to Bacterium phaseoli; and rust, due to Uromyces appendiculatus. Methods 
of treatment are also given in each disease. 
SHELDON” has just published the results of his study of the ripe rot or mummy 
disease of guavas. This disease is similar in many respects to the ripe rot or 
bitter rot of apples. It is produced by Glomerella psidii (G. Del.) Sheldon. He 
found the ascigerous stage and worked out the life history of the fungus in con- 
siderable detail. : 
ORTON** has published a brief summary of the present knowledge of the 
diseases of the Irish potato in Maryland together with methods of treatment of 
these diseases. 
application of this remedy is possible. The second disease mentioned is the 
summer blight, due to a species of Fusarium which attacks the plant in much 
the same manner as does the fusarium Stage of Neocosmospora which causes 
the wilt of cotton, etc. The third disease mentioned is the winter blight, due to 
the potato-blight fungus, Phytophthora infestans. It occurs only after heavy 
fogs, dews, or rains, and hence in California attacks only the winter crop. Spray 
ing with Bordeaux mixture is recommended to be applied just after the rains 
or dews. 
9 WHETZEL, H. H., Some diseases of beans. Bull. N. Y. Cornell Exp. Stat 
239:195-214. figs. Ioo-114. 1906. 
10 SHELDON, J. L., The ripe rot, or mummy disease of guavas. Bull. W. Ve 
Exp. Stat. 104: 299-315. pls. I-4. fig. I. 1906. 
*t Norton, J. B. S., Irish potato diseases. Bull. Md. Exp. Stat. 108:63-7? 
figs. I-4. 1906. 
*? STEVENS, F. L., Report of the Biologist. Rept. N. Car. Exp. Stat. 1904- 
PP- 10. 1905. 
"$ SmiTH, R. E., Tomato diseases in California. Bull. Calif. Exp. Stat. 1757 | 
I-16. figs. I-8. 1906. 
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