Bui. 1380. U. S. Dept. of Agriculture 
Plate XXX 
Effects of Brown Bast and Tapping Cuts on Hevea 
A, Circular callus nodules or plates formed over tapping cuts; B, nodules formed in the cortex 
affected with brown bast; C; scaly bark and brown lines in the cortex due to In own bast. 
(Natural size) 
