138 



FORESTRY 



first consideration ; but also insect attack and destructive 

 forest fires may in great part be combated by a suitable dis- 

 position of the cutting series. As a rule, the successive 

 fellings should be carried on in a direction contrary to that 

 of the prevailing wind, and the felling areas should then 

 take the form of broad strips at right angles to that line. 



Cutting Series. Each apportioned part of a working 

 section for which a complete succession of fellings is arranged 

 forms what is called a cutting series. There may be only one 

 cutting series in the working section, the age gradations being 

 so planned that fellings proceed straight forward in unbroken 

 sequence, as shown in Fig. 30. The " coupes " in such a 



West, 



U-a U&, V-3 U-S U-2 U 



.East 



FIG. 30. FORMAL ARRANGEMENT OF AGE-CLASSES 

 Cutting would proceed from east to west 



regular series as this equal in number the years in the rota- 

 tion. But though possessing the advantage of simplicity, and 

 Visually suitable for coppice woods, long cutting series of this 

 kind are not always desirable. In the management of high 

 forest it is a general rule that no part be cut over until the 

 recently cleared area adjacent to it has been fairly established. 

 To obtain this, and yet continue the annual utilisation and 

 restocking, it is necessary to carry on operations at several 



