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and worked away at the base of the trunk until it was com- 
pletely girdled. Only one small canker was found in the top of 
the tree, which had a spread of twenty feet or more and remained 
green through the season of 1918. 
Leaf-blight of the plane-tree and white oak has been unusually 
prevalent this season, owing to the wet weather in May. This 
disease, which renders the trees so unsightly, may be controlled 
by sanitation, pruning, and spraying, but the process is expensive 
and exacting. Spraving alone will be of value if done at the 
proper time. Use the strongest Bordeaux mixture (5-5-5090), 
applying it thoroughly with a power sprayer before the leaves are 
half grown, and repeat two or three times at intervals of a week 
or ten days according to the weather. This solution kills the 
summer spores and prevents infection of the new leaves. If the 
dead twigs and leaves, both on the trees and on the ground, are 
collected and burned, the winter spores will be killed and the 
disease will not appear with the opening of the buds. All the 
trees In a given locality should be treated at once. 
Dr. Fred J. Seaver spent the first week of June at Ithaca, 
New York, collecting fungi in collaboration with Cornell Uni- 
versity, the Brooklyn Botanic Garden, and Syracuse University. 
Three main trips were made, one to Enfield’s Gorge, one to 
Labrador Lake about forty miles from Ithaca, and one to the 
bogs of Mud Pond Basin near McLean. Other local trips were 
made in the gorges immediately adjacent to the college campus. 
When necessary, transportation facilities were provided by the 
extension cars of the Agricultural College and the various trips 
were attended by a number of the graduate students and staff 
of the department of plant pathology under the direction of 
Professor H. H. Whetzel. While an exact count has not yet 
been made, the trip will probably add more than two hundred 
specimens of ascomycetes and parasitic fungi to the Garden 
collections. No especial attention was given to the higher fungi 
since none of the party was particularly interested in those forms. 
