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inspection of trees and destruction of larvae should yield bene- 
ficial results. 
Most strenuous means should be adopted for the detection 
and control of this insect in cities and parks, since it threatens the 
destruction of many of our most valuable shade-trees. 
FRED J. SEAVER. 
BOTANIZING IN THE YELLOWSTONE PARK. 
Miss Julia T. Emerson and Miss Winifred J. Robinson spent 
six weeks in July and August, camping and horseback riding in 
Yellowstone Park with a party under the direction of Professor 
Shattuck, of the Department of Geology, Vassar College. They 
made a collection of flowering plants for Vassar College and a 
small collection of fleshy fungi and mosses for the. New York 
Botanical Garden, taking photographs of many of these plants 
and the localities where they were found. 
ark boundary, about fifty miles from Cody, is marked by 
a military station, where every one who enters is properly 
registered. Miss Robinson had permission from the Department 
of the Interior to collect and remove plants from the park and 
carried a letter from Colonel Brett, military director of the park, 
instructing the soldiers to this effect. 
On the fifth day of July, when the party left Cody, Wyoming 
(6,000 ft. elevation), the mesa above the town was yellow with 
beyond that the cactus disappeared, the gray mountain sage 
giving the prevailing note of color except ae alfalfa and other 
crops were made green as a result of irrigation. 
From such desert-like conditions it was startling in one day to 
climb to Sylvan Pass and see the yellow adder’s-tongue piercing 
the edges of the snow-banks, and delicate blue and yellow violets 
