PLATE II. 
iE 
! 
Oak wood, showing the difference in appearance of the various sections. 
Nat. size. 
A. Transverse section (a cross grain, 3B. Vertical radial section (quar- 
horizontally as the tree stands). tered, showing silver grain). 
c. Vertical tangential section pv. Vertical section in a direction 
(plankwise). between Band c. 
Photo-micrographs by A. DEANE. 
Adlard § Son, Impr. 
