216 SYLVICULTURE IN THE TROPICS 



PT. II 



effected, it will usually be found that the light admitted 

 has made it possible, at the same time as making seed- 

 fellings at a, to start preparatory-fellings in the sur- 

 rounding belts of forest, marked b. Simultaneously 

 with these, other spots marked d will also be found to 

 be ready for preparatory -fellings. When the spots 

 marked a are ready for after-fellings, those at b and d 

 will be also ready for seed-fellings, and the surrounding 

 forest, marked c and e, will be ready for preparatory - 



Fig. 75. 



fellings, as also other spots in the forest, marked f, 

 and so on until the whole area has been gone over, and 

 a new and necessarily irregular crop, but uniform within 

 each respective group, has taken the place of the old. 



The drawbacks of this method are that the fellings 

 are scattered over smaller or greater groups over a large 

 area, that, consequently, fellings, transport, and super- 

 vision are more difficult and costly, and that there is 

 more risk of injury to the adjoining crop. The out- 

 turn of timber will also be less regular than in either 

 of the preceding methods. 



Although the examples given above for the various 



