PLATE IV. 
Cir. 211, Forest Service, U. S. Dept. of Agriculture. 
—— ae 
‘ Ssereoo? 2 820 
RO ite a 
SEP eg 5%. 
ee re a ce 
- 7-2 
“Fe . 
254288 
— 
ot oe 
Sg ee 
TANGENTIAL SECTION OF GREENHEART WOOD. 
Magnified 50 diameters. 
v., vessel; p. r., pith ray; w. f., wood fiber. 
