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NATURAL REGENERATION 



Spruce, Douglas, Thuya gigantea, Weymouth Pine, Ash, and 

 Spanish Chestnut find a little shade when young more 

 beneficial than otherwise. On the other hand, Oak, Scots 

 Pine, Corsican Pine, and Larch are always very light- 

 demanding. 



Beech may be naturally regenerated under the three 

 systems already referred to ; but in no case is the natural 

 regeneration likely to be a success if the soil is in the least 

 degree sour. So exacting is Beech in this respect, that it has 

 been said that it will not naturally regenerate unless there 

 be plenty of lime in the soil. This, however, is not strictly 

 correct ; but there is no doubt that natural regeneration is 

 far more certain on a soil which is distinctly calcareous. 



The selection system has already been dealt with in a 

 general way. But it may be noted that unless the soil is 

 good, a short rotation of about 90 years will usually give the 

 best results, unless bigger timber is especially desired. 



Great care should be taken not to " overcut " the trees in 

 the older age classes ; for such a course is equivalent to 

 spending capital instead of income. 



The following table will show the number of trees under 

 the selection system that should form the growing stock per 

 acre, and the number that may be cut, if cuttings be made 

 every 1 5 years, and if the oldest timber be cut at 90 years : 



BEECH UNDER SELECTION SYSTEM. Rotation, 90 years. 

 Average soil and situation. 



This must depend upon the efficiency of the previous regeneration. 



