I 
Fig. 3.—Work of white-pine weevil, showing character of injury, chip cocoons, and pupal cells: 
a, Vigorous terminal shoot, showing condition of new growth at time pup are transforming 
to adults; b, 38-year-old top, showing how lary 
# have migrated from terminal to the 2 and 3 
year old internodes; c, chip cocoon and pupal cell, natural size, (Original.) 
