36 



ation fellings are prescribed by volume of material, a process 

 which alone involves a laborious and costly calculation of 

 the contents of the crop extending over a large area, and 

 the fellings are carried out in this area wherever required. 

 The method can only be employed where all the produce of 

 the forest is saleable, and it is also unsuitable wliere repro- 

 duction is very slow or difficult to obtain, as at high elevations 

 and in vei'y dry climates. In fairly moist climates in the 

 plains it might be applied where the demand for the produce 

 is sufficiently great and profitable. 



The ahove remarks apply also to the modification of the 

 method of successive fellings known as group method. 



It will be seen that in determining the method of treat- 

 ment the chief points to be noticed are — 



(1) The produce in demand. 



(2) The composition, condition and sylvicultural re- 



quirements of the crop. 



FOEMATION OP THE WORKING-CIRCLES. 



Rules regarding the selection of circles.— The reconnaissance 

 completed and the general method of treatment adapted to 

 each section of the forest area determined, the working-circles., 

 subject to such modifications as a more detailed exam- 

 ination of the crops may subsequently prove necessary, are 

 decided upon. The most important rule to bear in mind is 

 that all the crops included in one working-circle must be 

 susceptible of the same method of treatment. 



Each working-circle forms a separate centre of supply 

 and a unit of administration, and may, where possible, 

 constitute a separate charge. Very often, as for instance 

 where there are large forest masses — such as the teak 

 forests of Burma or the deodar forests of the Himalayas — 

 subjected to the same method of treatment, the formation 

 of working-circles depends entirely on administrative 

 facts and presents no difficulty. But where there is a 

 local demand for the produce, requiring a continuous supply 

 near at hand in several different centres of consumption, 

 or where the nature of the crop varies very much from 

 place to place, it will be necessary to form a number 

 of comparatively small working-circles each of which can- 

 not constitute a separate charge. This is especially the case 



