TABLES FOR PARTIAL CLEARANCES 173 



However, Thuya gigantea will often be successful, as its 

 ultimate height growth is not excessive. 



On average soil the following table will show the number 

 of trees cut, etc. : 



TABLE OF CLEARANCES. Average soil and situation. 



Note. The best trees with long clean boles should always be left. 

 If high forest with coppice is formed, the cuttings should be about every 

 15 or 20 years, corresponding with the length of rotation. 



Larch should be partially cleared from 30 to 35 years 

 onwards ; though sometimes, on account of Larch Disease, it 

 will be begun much earlier. 



The cuttings may be rather heavy. 



Douglas Fir is one of the best trees to use for underplant- 

 ing the Larch, and probably also Sitka Spruce. If under- 

 planting is done before the 3Oth year, slower growing trees 

 should be used. Beech is very excellent, also Spanish Chest- 

 nut and Thuya gigantea. 



If high forest with coppice is required, the conifers must 

 of course be excluded, so also should Beech ; Spanish Chest- 

 nut is the most suitable for the underwood. Sometimes 

 sowing may be tried instead of planting ; but there is really 

 little to recommend it. Its first cost is a little cheaper than 



