292 SYLVICULTURE IN THE TROPICS pt.iv 



trees such as Shorea robusta, Boswellia thurifera, and 

 Pinus longifolia, an abundant crop of grass has sprung 

 up and forms a very fair safeguard against erosion. 



But, especially where there are rotten shales and 

 torrential downpours, these measures may not be suffi- 

 cient. In addition to them, the fellings on the, as yet, 

 still forest-clad portions must be discontinued, or they 

 must be made very carefully on the selection system. 

 In places where a heavy crop of high forest trees may 

 be a danger, owing to their weight, it may be advisable 

 to fell on the coppice system with short rotation, but 



Fig. 92. 



in this case the fellings should not be made just before 

 the rains, as this would expose the soil unnecessarily. 

 Trees standing on the lip of the wound caused by a 

 landslip should be felled, otherwise they will be liable 

 to be overturned and to cause greater damage, but 

 their roots should on no account be grubbed out. 



Efforts should then be made to reclothe the bare 

 slopes with vegetation ; but as, on a constantly 

 moving surface, satisfactory results might be difficult 

 to obtain by mere sowing or planting, it may become 

 necessary to do something which will at once give 

 stability to the slopes. 



1 Schlich, op, <((. vol. iv. 



