362 
Indian Forest Records. 
[VoL. 1. 
All classes agree except the highest and lowest. (3) shows results slightly 
smaller for Class I than is actually the case as the callipers used W'ere graduated 
to 6 inches diameter classes. Trees between 6 feet and 6 feet 31 inches are 
thus included in Class II, and so on. 
(c) Inclusion of all trees. — The classification into sound and unsound 
trees varies so greatly in the different enumerations, and in the records of trees 
felled, that it is impossible to separate the one from the other. For the purpose 
of estimating the financial results of past and future working it would be of 
great value to know the proportions between sound and unsound trees. 
Although this cannot be ascertained now, there is some use in dealing with the 
figures for all trees, good, bad and indifferent, because they enable us to 
estimate w'hat the total stock now is, and the changes in numbers which may 
be expected in the near future. 
(d) Compartments 1, 2, 60, 71a, 72 to 75 are not included in the above 
calculations for Classes I and II as the trees to be felled in them in the course 
of the next two years have not yet been marked. 
The sal forests will be worked under the selection system with a felling 
rotation of 30 years. The annual coupes will be of approximately equal area. 
The exploitability for the sal will remain at 6 feet during the first half of the 
rotation, but will be raised to 6 feet 9 inches in the second half of the rotation. 
The possibility in I Class sal trees is estimated to be 16,800 trees per 
annum for the felling rotation as a whole. As it is very unlikely that the first 
15 coupes will be found to contain at the time of felling more than an average 
of 12,000 I Class sal trees, it is decided, as a precautionary measure, to 
prescribe this figure as a maximum. The fellings of I Class sal trees in any 
one year are therefore not to exceed a maximum of 12,000 trees. This limita- 
tion will also apply to coupes xvi and xxx. 
The general working scheme is to remove by selection fellings during the 
next 30 years as much of the yield as can be done in view of the deficiency 
there is at present in all classes, and of the desirability of raising the standard 
of exploitability of sal above 6 feet. 
The possibility has been fixed by area with a limit to the total number of 
I Class sal trees to the felled in any one year in the two working circles taken 
together. 
The total stocked area of the east and w'est sal working circles is 90,436 
acres; so that the sum of the coupes averages 3,015 acres annually. 
Details of the stock of sal it is estimated that there will be when the plan 
comes into force, are given in Appendix D; and above the average per acre 
has been shown to be — 
1. 
II. 
III. 
IV. 
Ya. 
2-82 
6-90 
10-04 
18-7 
30 
Using the percentages and periods given above the possibility works out to be 
as follov,'s for I Class sal trees (exploitable at 6 feet) ; — 
(i) For 30 years — 
= 2'82 + 40 per cent, of 6-90 per acre. 
= 6-68 X 3,015. 
= 16,824 trees ; say, 16,800. 
