180 MAINTENANCE OF THE SELECTION METHOD. 



and the soil is exposed alternately to be washed away and to 'fea 

 caked. Vegetative vigour diminishes, the larger trees die off one by 

 one, seedlings are producied in decreasing numbersj and the ground 

 at last becomes entirely denuded of its forest growths I*hese two' 

 sets of phenomena may be noticed in many and many a locality. 

 Q?hey are especially frequent and well marked in the South. The 

 former of them furnishes a valuable lesson to those engaged in 

 hill reboisements, while the second shows us the danger of im* 

 moderate Selection FellingSs 



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