THE SAN JOSE SCALE AND ITS CONTROL. o 
in figure 4. Although many of the limbs and branches are injured 
or killed, such trees may be saved and brought into vigorous condi- 
tion by thorough pruning and by insuring the control of the insect 
in the future. 
THE INSECT DESCRIBED. 
The mature San Jose scale is small, grayish in color, circular in 
outline, somewhat convex, and with a nipple-like prominence in the 
center. The female scale is about 1 millimeter in diameter (about the 
Fic. 2.—Appearance of peach tree shown in figure 1, one year later. The dead 
and injured wood was thoroughly pruned out and the San Jose scale controlled 
by spraying. (Original.) 
size of a pinhead); the male scale is much smaller and elongate. (See 
figs. 5 and 6.) The insect proper is beneath the so-called scale, this 
being simply a waxy covering secreted by the soft, helpless, yellow 
“louse” for its own protection. Where trees and plants are but slightly 
infested its presence is not readily detected by the casual observer, 
but in the case of severe infestation (see fig. 6) the bark of the tree 
