Part IV.] Caccia : Selection method of treatment in India. 339 
To regulate the annual yield in this way by number of trees alone is how- 
ever not sufficient, and even dangerous, as it might not only lead to either over 
or under cutting these forests, but as it will also be necessary for sylvicultural 
reasons to retain a number of trees of exploitable girth. 
The area to be dealt with annually is therefore laid down and except as 
stated below should not be exceeded. This area or annual coupe contains the 
maximum number of trees exploitable year by year, the number fluctuating 
in consideration of the different sylvicultural requirements of the several couj es. 
It must therefore be distinctly understood that although the whole of the 
I Class trees should be removed as far as sylvicultural and economic considera- 
tions will allow, the total number of trees shown as available in the annual 
coupes is a maximum one, and is not to be worked up to if there are objectioris 
on the above score to the removal of any portion of the crop, or if the demand is 
lacking. 
Under no circumstairces is the total number of II Class trees shown in the 
tabular statement of fellings as available from year to year, to be exceeded. 
ii. — The Oudh Method. 
If as in Brandis’ Method the felling rotation be fixed at the num- 
ber of years which it takes to replace the Class I trees, that is to say, 
the number of years required for the Class II trees to become Class I, 
it is evident that during that period, year by year, a certain number 
of Class II trees will pass into Class I, and consequently in addition 
to the number of trees of Class I which are present in the forest ai 
the commencement of the felling rotation, it may be permissible to 
include in the possibility the number of trees which it is calculated 
will pass into Class I during that period : though it should be fully 
realized that in so doing, as already explained, the mean exploitable 
size will be reduced. The actual number of trees that can be so 
brought into the possibility will depend chiefly on the size of the 
annual coupes, that is, on the proportion of the whole forest worked 
over annually. If the whole of the forest is worked over annually, 
the whole of the second class trees (less a percentage that may fail to 
survive) will become of exploitable size and will be available for 
felling during the course of the felling rotation.* If on the other 
hand the forest is divided into a number of annual coupes corre- 
sponding to the number of years in the felling rotation, the maxi- 
miim number of Class II trees, which will become available for 
exploitation in the coupes as they are worked over during that period 
will be equal to | the Class II trees (less casualties). It is evident 
* By felling rotation should be understood (as in Brandis’ Method) the number 
of years required for a Class II tree of minimum dimension to become Class I. 
