PLATE IV. 
Bul. 523, U. S. Dept. of Agriculture. 
Coy 
er ag ws Hk 
PG Lie ee ae 
pudeacan 
Lisadicdsamccton 
Bie 
F-3WDS 
hag Ayo 
J OW iy Sy 
1on. 
.—Tangential sect 
Fia. 2 
Shed 
eee 
Seah: 
% 
i 
—2WDS 
F 
.—Transverse section 
5 al 
Fia 
F—4WDS 
Fig. 3.—Radial section. 
STRUCTURE OF WHITE ASH WoobD MaaniFIED 50 DIAMETERS. 
ing; (2) width of springwood; (3) 
(6) wood fiber; (7) wood parenchyma. 
? 
: (1) Width of annualr 
refer to the following 
width of summerwood; (4) medullary or pith ray; (5) vessel 
Numbers on photographs 
