Pakt IV.] Caccia : Selection method of treatment in India. 337 
It will be noticed from the above table that the number of sound Class I 
teak is very small. This is due to the fact that the forest was leased out by 
the Ahiri Zamindar to contractors prior to its sale to Government, and these 
contractors cut out as many of the large sound trees as they could obtain. It 
will be a very long period before the stock will be again in a normal condition, 
as the only really large age class is Class V, below 6 inches diameter, which is 
a direct result of fire-protection and general conservancy by the Department. 
This class was not enumerated in the valuation surveys just undertaken, but 
it contains at least 500,000 trees at present, and will become much greater 
after this felling rotation is over and the whole area has been regularly treated. 
Taking only sound trees and assuming that the following proportions of 
trees in the various classes survive to become Class I, viz- : — 
85 per cent, of Class II, 
70 per cent, of Class III, 
40 per cent, of sound trees below Class III, 
we can calculate the following results : — 
85 per cent, of Class II will become Class I in 63 years. 
82 per cent, of Class III will become Class II in 49 years. 
57 per cent, below Class III will become Class III in 63 years. 
Then, at the end of the 40 years’ felling rotation we shall have the following, 
amount of sound stock on the ground taking the average ages for classes as in 
the foregoing table : — 
Class I 
II 
85 
IW 
*^63 
x:21.386 X 
63) 
85 
100 
X 21,386 X 63 
I 
82 
100 
X 43,125 X 
40 
49 
No. 
= 11,542 
=35,930 
III 
7c X 18) + 82 9 
' X 43,125 x 70 ^ 
100 
X 552.698 X =2(16.781 
100 63 
Then, at the end of the 40 years’ felling rotation we shall have the following 
comparing present Class I stock with what we shall have on the ground after 
the 40 years’ felling rotation has been completed : — 
Number of sound 
trees at present 
Number of 
in stock as 
trees (calculated) 
Class. 
estimated from 
which will 
results of 
exist after 40 
valuation 
years. 
survey. 
1 
II 
III 
Under III . 
6,465 11, .=142 
21,386 3.5,930 
13,12.5 206,781 
552,69? 
