107 



Bark from storm-felled log of Douglas spruce, showing galleries of the Douglas 

 spruce Dendrootonus. 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 larva" 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 larvfe of various 

 insects which are terrestrial in the adult state. 



