28 SYLVICULTURE IN THE TROPICS R .i 



of crystals in cavities in the wood of Dryabalanops 

 aromatica ; gum-resin, used for varnish and for dammar, 

 as in several species of Shorea, Doona, and Diptero- 

 carpus ; wood oil, as in Dipterocarpus turbinatus and 



Fig. 7. -Wei zone in Ceylon. Forest of Dipterocarpus zeylanicus and />. WspidM*- 



D. glandulosus ; fat or tallow which is obtained from 

 va lious species of Shorea in the Malay Archipelago ; T and 

 edible fruit as with Doona trapezifolia in Ceylon. 



1 Bramlis, Indian Trees. 



