9 8 



further investigations. The Coast douglasia is a 

 rapid-growing, shade-tolerating species which 

 combines the peculiarities of both fir and spruce, 

 while its root system adapts itself readily, accord- 

 ing to Mayr, with the given conditions of the 

 soil. On the other hand, it is not a kind of tree 

 adaptable for poorer pine soils than Classes II. to 

 III. In its early years it is susceptible to early 

 frosts on account of its late after-growth (Sep- 

 tember), but as regards late frost it stands, in its 

 demeanour, between fir and spruce. In the 

 severe temperature of winter it suffers from 

 browning of the needle, needle-shedding, and 

 killing of chlorophyl. It is, consequently, suitable 

 in moist atmospherical situations such as have 

 been already mentioned in connection with the 

 Cham&cyparis lawsoniana. Warm, open plains, 

 with their contrasts in temperature, should be 

 avoided. Pure plantations can be made on cold 

 areas, when these slope to the south-east or east, 

 or north and north-west, up to an altitude in 

 which the fir appears pure. In low-lying places 

 some slight protection by copse or the stool shoots 

 of broad-leaved and coniferous trees is desirable. 

 The Coast douglasia develops best in groups 

 amongst broad-leaved coniferous trees introduced 

 before or after their reproduction. It is also 

 adapted for filling up bare patches where it is 

 planted singly. Close planting, that is one plant 



