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Bark from storm-felled log of Douglas spruce, showing galleries of the Douglas 
spruce Dendroctonus. State of Washington. 
Group of longleaf pine killed by so-called ‘‘ worm deadening.’’ Eastern Texas. 
Young Sitka spruce, showing top killed by western spruce-weevil. State of — 
Washington. 
Cottonwood tree killed by the bronzed Agrilus, showing the galleries of larvee in 
trunk. Priest River Forest Reserve, Idaho. 
Young chestnut killed by the two-lined chesnut borer. Western North Carolina. 
Large chestnut, the death of which was hastened by insect injury. Western North 
Carolina. 
Girdled bald cypress tree injured by timber beetles. South Carolina. 
Trunk of hickory killed by hickory bark-beetle, showing galleries on surface of 
wood. Western North Carolina. 
LIVING INSECTS. 
By means of aquaria, vivaria, and other forms of insect cages, living insects will 
be on exhibit, subsisting on their natural food and undergoing their usual trans- 
formations. 
In the aquaria, stages of some of the species of mosquitoes occurring on the Pacific 
coast will be shown, as also aquatic beetles and bugs and the aquatic larvee of various 
insects which are terrestrial in the adult state. 
