•2 7'^ DIVISION A\T> ALLOTMENT OF TTIK FOUKST AKEA. 



(4.) For the location of the annual oi- periodic coupes. 



(5.) To facilitate the transport of forest produce. 



(fi.) To obviate the necessity for repeated surveys of tlie 

 coupes. 



(7.) In some eases, to facilitate hunting and shooting. 



The boundaries of compartments are formed l^y roads and 

 rides, whenever natural lines are not available. 



The shape of compartments depends on the configuration 

 of the ground. In the plains, a rectangular shape (with sides 

 2 : 1, or 3 : 2) is most suitable. On hilly ground, such a 

 shape is not always practicable ; but the actual shape should, 

 as far as possible, approach that of a rectangle. 



The size of compartments cannot be laid down : it depends 

 on — 



(1.) The size of the working circle. 



(2.) The intensity of management. 



(3.) The extent of danger from fire. 



3. TJic Siih-cnnijiarfiiK'nt. 



If, within the limits of a compartment, considerable 

 differences exist in respect of species, sylvicultural system, 

 age of growing stock, quality of locality, etc., it may be 

 divided into two or more sub-compartments ; the latter may 

 be temporary, if the differences will disappear after some time, 

 or permanent. Bub-compartments may l)e marked by shallow 

 ditches or other cheap boundary marks. 



The forester should not go too far in the formation of sub- 

 compartments, as it is accompanied l)y additional expenditure. 

 As a rule, sub-compartments should be formed only, if the 

 additional income, derived from different treatment, at least 

 covers the additional expense involved thereby. 



4. 77/ r ]Vi>r]n)i(j See f ion. 



A part of a working circle, which forms a se])arate series of 

 age classes, is called a working section. If a working circle 



