20 
THE) STORY OR THE) OAK TRE)E) 
light, and it serves as a channel through which water 
containing plant food rises and flows from root to leaf 
r .Puter Bark 
;..Inner Bark 
-—Cambium 
-Summer Wood 
--- «Spring Wood. 
~ ^53-—Annual f?mo 
■•Medullary l?ay 
.2 c 
c -2 
CO 
OO 
c 
O 
Q; 
to 
'Inner darR^ 
'Outer 6cjrk » 
<Scip Woo<4»-*' 
/•- Med Ray 
™ Spnno Woocj 
’--Heart Wood 
