164 



Valueless. Also that, as regards the fellings and other main 

 provisions of a working-plan, a separate record and compari- 

 son for each working-circle is indispensable. 



But the weakness of the forest staff, the nature of the 

 work done, and the manner in which such records must be 

 kept up often render it impossible to prepare separate 

 records for each working-circle. It should also be borne in 

 raind that many works, such as buildings, roads, flre'lines, 

 etc., are not always connected with any one particular circle, 

 but may be common to the whole area concerned. It is 

 therefore necessary, if the returns are to be prepared without 

 an undue expenditure of time and labour, that considerable 

 latitude should be allowed in their upkeep; and it will 

 be best to require their submission only for each separate 

 locality or executive charge, such as a range, the working- 

 circles being distinguished from one another by writing the 

 name of each across the return or statement as in the 

 examples given above. This matter, although one of detail, 

 is of considerable practical importance. 



Section III. — Eecord of changes. 



In addition to the upkeep of a careful record of the 

 works actually carried out during the course of each year, 

 changes in area due to excisions, alteration of boundaries, or 

 other causes are likely to occur, and these should be carefully 

 recorded in the maps and in the statement of areas. More- 

 over, for various reasons, it may be found necessary as the 

 fellings progress to make alterations in the allocation and area 

 of the coupes : all such changes should be noted at the end of 

 each year. 



Section IV. — Revision of wobking-pians. 



In India where the method of treatment prescribed is 

 frequently of a tentative nature, and where changes in the 

 constitution of the forests and local requirements are liable 

 to occur, though the working scheme may be prepared for 

 a full felling rotation or for the period required to work 

 over one periodic block, the question of revising the working- 

 plan after the lapse of a shorter interval of time, which 

 should not exceed 10 or 15 years, should always be provided 

 for. 



Example.— In 1917-13, or a year before the close of the fiwt half-petiod, the 

 plan should come under revisiou, chiefly with a view to seeing if the arrangement of 

 coupes 16 to 30 can not be improved upon, and aleo to determine more accurately than 



