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PRACTICAL FOREST MANAGEMENT. 



suitable yield capacity ratios. The following figures from the sal 

 yield table are given as examples : 



(1) Timber production only considered. 



(2) Total wood production considered. 



The method of using these factors of equiproductive capacity 

 is sufficiently obvious to require no elaborate explanation. The 

 map or measured actual area of a compartment is multiplied by 

 the factor of that quality class to which the compartment has 

 been allotted in order to get the " reduced " area of the compart- 

 ment. Taking the figures in (2) (b) above : 



It is customary to reduce to unity that quality class which is 

 most abundant in the area being dealt with. The reduced areas 

 so obtained are used in allotment to periodic blocks, to ensure as 

 far as possible that the periodic blocks are equiproductive, though 



