BRITISH FOREST TREES 55 



must always be one of the primary considerations in deter- 

 mining the period at which the forest can be most advanta- 

 geously utilized and reproduced. 



SPECIAL INDIVIDUAL CONSIDERATIONS REGARDING THE 

 GROWTH OF FOREST TREES 



These are necessary in order to know under what conditions 

 each species is likely to thrive. Trees like the acacia (Robinia 

 pseudoacada), the horse-chestnut (sEsculus hippocastanuni), 

 the plane tree (Platanus occidentalis\ the walnut (Juglans 

 regid), and coniferous exotics cultivated more for ornament 

 than for profit are here left out of account, as belonging 

 rather to the province of arboriculture than to that of 

 sylviculture. The individual species are treated of in the 

 order of enumeration on pages 13 and 14. 



CHIEF SPECIES, forming, or capable of forming, Pure Forests. 



Conifers. 

 i. SCOTS OR COMMON PINE, OR SCOTS FIR (PINUS 



SYLVESTRIS, Z.). 



Distribution. 1 Scots pine is the most widely dis- 

 tributed of all the European conifers, being found over 

 nearly the whole of Europe and the greater part of northern 

 Asia, from 7oN. latitude in Scandinavia, where it even 



1 The details as to distribution have generally been taken from 

 Luerssen's Forstbotanik in Lorey's Handbuch, &>c. , but such as refer to 

 distribution throughout Great Britain and Ireland have been mostly 

 extracted from Loudon's Arboretum el 1't'uticetum Britannicntn, 1838, 

 and Selby's History of British Forest Trees, 1842. 



