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INDUSTRIAL PLANTS 



Fig. 268. — Cork Oak. Wedge of trunk cut across to show wood, with 

 strong pith-rays and annual rings, and the thick bark consisting of the 

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

 colored). (Figuier.) 



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



