NOTES ON TREES. 37 



much in evidence are not very suitable decidedly unsuit- 

 able if the grasses are thin and have a mat of the yellowish 

 moss as a bottoming. Unlike the spruce, silver fir does 

 not transplant so well in late as in early spring, and is 

 better planted along with larch. It is also very susceptible 

 to injury it' there is delay in planting after lifting. 



Nobilis (Abies nobilis), raised from seed collected locally, 

 has been planted on Inverliever in groups for wind-breaks, 

 and is very successful on soils similar to those suitable for 

 common silver fir, and also on a good peaty soil. 



Douglas fir (Pseudo-tsuga Douglasii) has come exten- 

 sively under observation, and in general is doing well. 

 In some cases where groups have been extended into 

 rather unfavourable ground there is a marked falling off 

 in the results. The conditions required for silver fir are 

 generally applicable. But it is much better suited than 

 silver fir to situations where there is a dense growth 

 of bracken. Indeed, no tree is so well suited to these 

 conditions, provided there be a fair degree of shelter. 

 Generally, it should be planted in spring, after March. 



Thuja. Thuja giyantea gives a wider range in choice 

 than Douglas fir in that it stands exposure much better, 

 grows at a higher altitude, and stands a higher degree of 

 soil-moisture ; in a good soil, indeed, it is most successful 

 with a degree of moisture quite unsuited to Douglas. It 

 has been tried in a frost-hole among purple molinia and 

 bog-myrtle, and is flourishing, with few deaths, at the end 

 of three years. 



Larch. European larch (Larix europwa) does well in 

 Argyllshire, and is remarkably free from canker. It 

 stands exposure better than Douglas, but should not be 

 planted on wind-swept ridges or promontories. Otherwise 

 its requirements are similar to those of Douglas, and, as 

 with silver fir, frost-holes should be avoided. 



Japanese larch (Larix leptolepis) will succeed well on any 

 soil that will grow the common larch, and succeeds even 



