360 
Indian Forest Records. 
[Voii. I. 
We must also take into account the present number of mature trees and 
divide these by 70. We have — 
Mature Can be 
trees. felled 
yearly. 
Ninglat Working Circle 28,147 402 
Manora ditto ...... 12,490 178 
The possibility becomes therefore — 
Ninglat Working Circle ........ 1,260 
Manora ditto ........ 634 
It is estimated, however, that not more than 75 per cent, of the chir will 
be found fit for timber, and as only such trees can be worked out the possibility 
should be reduced to — 
Estimated yield 
in firewood for 
Commissariat 
besides timber. 
Ringlat Working Circle .... 950 34,200 maunds. 
Manora ditto * . . . 450 16,200 „ 
Total . 1,400 50,400 „ 
The Ninglat block which has only just been worked over has not been valued 
and is not to be regularly worked during the next 20 years. Any mature trees 
may, however, be removed if considered advisable. 
This is for 20 years, or for one felling rotation from 1st July 1896 to 30th 
June 1916, at the end of which period the plan will have to be revised. 
By way of comparing the results which may he obtained by cal- 
Example 5. Possibility dilating a general possibility for periods 
calculated for periods of of different lengths in the case of forests 
various length. which are not altogether in a normal con- 
dition the following extracts, taken from the Working Plan for the 
Trans-Sarda forests, United Provinces,* may be perused. 
From the different enumerations between 1885-86 and 1894-95 the average 
stock of sal per acre in 1902-03 is estimated to be : — 
I. 
11 . 
III. 
IV. i 
v«. 
2-82 
6'90 
10-04 
18*7 
1 
30 
Markings for fellings take place a year in advance of the fellings themselves; 
for this reason the calculations of stock are made for 1902-03 instead of for the 
year 1903-04. 
• Working Plan for the Trans-Sarda forests, Kheri Division, United Provinces, 
by F. A. Leete, I.F.S., 1903. 
