278 



INDUSTRIAL PLANTS 



Fio. 268. — Cork Oak. Wedge of trunk cut aercss to show wood, with 

 strong pith-rays and annual rinjis, an.l the thirk l)ark consisting of the 

 outer "virgin cork" (light eohired) and the inner "cork mother" (dark 

 colored). fFiguier.) 



Fig. 209. — Harvesting Cork. (.Figuier.J 



