CALCULATION OF THE ANNUAL YIELD. Ill 



are scattered all over the forests. If the programme outlined 

 in the last paragraph (namely, a sal coupe moving round the whole 

 felling series in 80 years and a kvkat coupa moving round in 40 

 years) were the only fellings affecting these trees, it stands to 

 reason that a tree which is matura at the beginning of the rotation 

 but which happens to stand oh the area last to be worked over 

 will be 40 or 80 years over-mature before it is felled, and it may 

 have deteriorated considerably in the meanwhile. To avoid this 

 waste it is necessary to haya some sort of selection fellings in 

 parts of the felling series which will not come under regeneration 

 for some time, to remove trees as they become ripe. 



" Each felling series is divided into 4 periodic blocks of equal 

 area, numbered I, II, III and IV respectively, and the following 

 fellings are prescribed : 

 Clearfellings : 



" (a) Th-} sal coupe. A. clearfelling of all species may be made ^ 

 annually over an area not exceeding one-eightieth of the whole 

 felling series, provided that arrangements can be made for 

 restocking the whole of the sal bearing area by means of culti- 

 vation and the remainder by means of cultivation or otherwise. 

 The only traes to be left standing are groups of immature sal 

 or other slow-growing valuable species which in the opinion of the 

 Divisional Officer, are likely to improve during the next 80 years.. 

 This felling will begin from the starting-point of Block I. 



"(b) The koliat covpe. A clearfelling of all species other than sal 

 and other slow -growing valuable species may be made annually over 

 an area not exceeding one-fortieth of the whole felling series less 

 the area of the sal coupe, provided that arrangements can be made 

 for restocking the area with or without cultivation. At the same 

 time a thinning in congested sal poles and the removal of sal of 

 inferior growth interfering with better stems will be carried out. 

 Isolated sal trees will be felled to allow of restocking. In areas 

 not fully stocked with sal, officers will be guided by the density of 

 the crop as to whether the sal should be felled and the area 

 restocked, or whether the tal crop should be left and no restockin 



