11 



Matti, Nana and Kindal are to be felled with a 6 feet girtli limit, no separate 

 figures of rate of growth were taken, as the number of mature trees is very 

 limited. Here the possibility will be based on the assumption that a 6 feet 

 girth tree on 2nd quality soil takes the same period to reach maturity as does 

 a 7 feet girth tree on 1st quality soil. This may not be quite correct but it is 

 a safe assumption to make. 



47. The normal annual yield of each species is the number of trees in the 

 penultimate class plus, in certain cases, a portion of the antepenultimate class, 

 minus the number lost during the transition period into the ultimate class, 

 divided by 40. Without going into calculation on this point it is clear that 

 there is a surplus growing stock, as, in every case except that of Jamba, the 

 ultimate class shows a greater number of trees than the penultimate class, while 

 in the case of Jamba it is about normal. 



48. It is not possible to ascertain the number of trees lost in the mature 

 class which disappear during the felling period ; it will be about 5 per cent. In 

 the same way the number lost from the penultimate class while passing into the 

 mature class is put at 10 per cent., it being impossible to estimate it accurately 

 owing to the numbers in the ultimate classes being abnormal. It will ba seen 

 in the case of Matbi that the number of unsound trees is very great as compared 

 with the sound trees. Now the amount is excessive in this species owing to 

 the occurrence of the "Water blister" mentioned in paragraph 19 of the 

 Report, but in spite of no water blister occurring in the other species moderate 

 allowances will have to be made for faulty trees. Thus 30 per cent, of the 

 ultimate classes and 20 per cent, of the penultimate classes of Nana, Kindal and 

 Jamba will be considered as unsound and left out of account. 



From observations made as to the extent to which the damage of the " water 

 blister " on Matti reached up the stem, it was found that in many cases fair 

 logs can be cut out of the non-affected parts of a blemished tree, so that in 

 calculating the yield 40 per cent, of the unsound trees of this species will be 

 included as capable of producing timber. 



49. Owing to the difficulty experienced in fixing the rate of growth of the 

 species in advanced age it is deemed advisable not to cut more than 50 per cent, 

 of the number of trees which it is possible to fell in the penultimate classes, and 

 which come over in front of the fellings into the ultimate class during the felling 

 period, or in other words to cut th of the trees as at present shown in the 

 penultimate class. 



The number of trees belonging to the four principal species included in the 

 two highest classes is shown in the following table ; 



50. The exploitable size of three out of the four species varies in the 

 two quality classes, therefore separate calculations will have to be made 

 in each case. As 77 per cent, of the area is 1st quality and 23 per cent, is 

 second quality, we get the following yield of Matti for the full period : 



On 1st quality soil. 



-10%) } =13,175. 



On 2nd quality soil. 



(9.909-5T) + (8,448-10%) } + ^ | (8,172- 6/ ) + (13,318 - 



23 



iuo 



'id / ) J 



= 5,731. 



