Top.—Cross sections of chips. Longest section represents about H inch of wood. Chipping 
high faces wastes much of the richest and most productive resiniferous tissue before it can 
yield fully. It cuts away the early-formed, comparatively short resin passages. These are 
seen in chips 2 and 4 in springwood of the 1023 ring nest bark (top), but are lacking in chips 
1 and 3. 
Bottom.—General view of test area. 
