38 NO TES ON f ORES TR Y. 



course all valueless trees are at length exterminated. 

 In India we have forests of mixed timbers, of which 

 perhaps only one kind is in great demand ; this one 

 kind has been frequently treated on precisely the same 

 method adopted by the skilled forester for the sup- 

 pression of inferior kinds. It has been persistently 

 cut out as soon as the trees attained a marketable 

 value, and the inferior varieties left in undisputed 

 possession of the soil. If this course be persisted 

 in, the extinction of valuable timbers in mixed 

 forests is only a question of time. 



It is quite true that such trees have no value 

 unless they are felled, but the fellings should be 

 arranged on such a method as to provide for the 

 appearance of their seedlings under conditions 

 which admit of their development unhampered by 

 the pressure of tall trees, with which they could 

 not successfully contend. 



In all mixed forests in which there are only 

 one or two valuable species, and those not in pre- 

 ponderance, there should be periodical thinning 

 inspections, during which every tree threatening to 

 interfere with the healthful development of trees 

 of the more valuable classes should be remorselessly 

 cleared off, or at least girdled, if they have abso- 

 lutely no market value ; and further, all valuable 

 trees, within twenty years of coming to the axe, 

 should have a space cleared round them, either 



