TENDING OF CROWDED WOODS. 



219 



reduced by the prompt removal of dead and 



sick trees, 

 (d.) They afford the means of strengthening the trees 



destined for the final crop against damage 



by snow, rime, and wind, 

 (e.) They yield substantial early returns. 



The returns from thinnings should by no means be 

 under-estimated, especially where the object of manage- 

 ment centres in the production of quantity. According 

 to the yield-tables of "Weise, Scotch Pine may be ex- 

 pected to yield the following returns under a rotation 

 of 90 years : 



