SYLVICULTURAL NOTES ON DOUGLAS FIR. 321 



st;ii ids :i moderate amount of shade and grows very 

 rapidly, it should be planted under Larch or Scotch Pine. 

 The Larch may be planted pure, and when from 20 to 30 

 years old it should be strongly thinned, only healthy, 

 vigorous trees being left, and underplanted with Douglas 

 Fir. The latter will reach timber size at the same time 

 with the Larch. The Douglas Fir will shelter the soil 

 under the Larch, while the latter will afford the necessary 

 protection to the leading shoots of the former which they 

 require. In this way the Douglas Fir can be grown in 

 localities where it could not be successfully reared pure. 

 At the same time, under this treatment, very high 

 returns may be expected. 



The mixture of Scotch Pine and Douglas Fir may be 

 arranged in the same way ; but the underplanting may 

 be postponed for another 10 years. 



e. Sylvicultural Systems. 



The Douglas Fir seems only suitable for simple high 

 forest ; it suffers too much from wind to be grown as a 

 standard in coppice. 



/. Formation of^ Woods. 



So far the seed is very expensive, so that direct 

 sowings are out of the question. No experience has as 

 yet been gained regarding natural regeneration. For 

 the present only planting is practised. 



The seed * and seedlings are treated in a similar manner 

 to those of the Spruce. They must, however, receive 



* A pound of seed received from Mr. Conrad Appel, Darmstadt, contained 

 45,000 grains, which produced 8,000 healthy seedlings. 



VOL. II. 



