CHAPTER VI. 



CONTROL OF EXECUTION AND RENEWAL OF WORKING PLANS. 



IT is not sufficient to prepare a working plan ; it is also 

 necessary to see that its provisions are carried out ; and when 

 the period for which it lays down the management of a forest 

 has come to an end, a new plan, or rather a revised plan, 

 must be prepared. 



As the preparation of a first working plan is to some extent 

 based upon doubtful data, it is of importance to keep a careful 

 record during its execution, so as to eliminate in the course 

 of time all such doubtful elements. Apart from this, changes 

 in areas or in other respects may occur, which must be noted. 

 The work of control and renewal comprises, therefore, three 

 distinct operations : 



1. The record of changes as they occur. 



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