TENDING OF OPEN WOODS. 227 



per acre can be made to reach a size in 120 years which 

 in a fully stocked wood they would only reach in about 

 200 years. 



ii. LAHCH AS OVERWOOD. 



This being a quicker growing and shorter lived tree 

 than Oak, the first specially heavy thinning and under- 

 planting may be done between the 20th and 30th year. 

 The underwood should consist of Beech. Silver Fir 

 is also recommended, but it grows slowly during the 

 early part of its life. Another excellent species for 

 underplanting may be found in the Douglas Spruce. 

 Possibly, Weymouth Pine may answer. The two last- 

 mentioned species are of quick growth. 



In this manner about 75 Larch trees per acre may be 

 brought to large timber size in 70 to 80 years. 



iii. SCOTCH PINE AS OVERWOOD. 



The heavy thinning and underplanting may take 

 place between the 30th and 50th year. Beech is an 

 excellent underwood, but Spruce is also admissible in 

 this case. Possibly the Douglas Fir may do, where 

 the locality is suitable. The last-mentioned species 

 grows so rapidly, that it will reach timber size at the 

 same time as the Scotch Pine. 



iv. OTHKR SPECIES AS OVERWOOD. 



Ash, Elm, and Sweet Chestnut may be treated in a 

 manner similar to that indicated for Oak. Various other 

 species, such as Spruce, Silver Fir, Beech, either pure 

 or mixed, have been tried and recommended for treat- 



Q2 



