SMALL SCALES ON BARK OF TRUNK OR BRANCH 255 
examination such twigs are found to have a scurfy or ashy look, the 
bark being crusted with hundreds of minute scales, no larger than a 
very small pin head. [If a sliver of the outer bark is cut away, the 
inner, soft bark will be found to show more or less reddish discolora- 
Fic. 347.— The San José Seale. Above, natural size. Center, enlarged. Be- 
low, a single scale, enlarged. Original. 
tion. On peach trees the scale is apt to gain a foothold first on the 
larger limbs, rather than the small twigs. When the scales are quite 
numerous, they will be found also on the leaves and fruit, as well as the 
bark. On the fruit of apple, peach, or pear a reddish discoloration 
surrounds isolated scales. Peach trees frequently are killed by the 
