374 
Indian Forest Records. 
[VoL. I. 
The annual yield during the first period should therefore be — or 
1,569 trees. 
There is, however, in the forest a large surplus. The annual yield being 
equal to the annual increment, in a normal forest all trees above 7 feet in girth 
would have been already removed and the yield for the first period would be 
the trees in the II and III Classes only, out of the total of 50,199, that is 20,252, 
giving an annual yield of 633 trees. The stock which should be always 
standing is half of the period increment or 16x633 = 10,128 trees. As there 
are 29,947 mature trees now standing which will be ready for girdling, the 
apparent surplus is 29,947 — 10,128 or 19,819 trees. If this surplus be removed 
during the first period the annual yield would be increased by 619 and would 
lotal 1,252 trees. 
To modify this figure we have the following facts : — 
(a) A certain number of trees are exploitable at 6 feet girth as they are 
growing on soil which cannot produce sound 7 feet trees. 
(5) It is very desirable that a considerable number of large trees should 
be left, in order that the supply of large sized timber may not be 
exhausted, that sufficient trees may be left for natural regeneration, 
and that too many old trees may not be taken out of the forest 
until the results of the working of the first period have been seen. 
Working in this forest has taken place over such small areas that 
little idea of eSects of concentrated and continuous felling can yet 
be had. 
It is therefore proposed that the number of sound trees to be girdled annually 
be fixed at 1,000 trees. 
In addition to these the yield will consist of sound dead timber and of 
unsound trees that can produce a marketable log. There are at present 10,485 
sound dead any dry trees above 4^ feet girth in the forests and many of these 
will be extracted with girdled timber before they are destroyed by fire. There 
are also 18,642 unsound teak trees above 3 feet in girth of which a considerable 
proportion are above 5 feet in girth and can produce a marketable log and must 
be girdled : 5,000 such trees would increase the yield by 156 trees annually, 
and all such trees must of course be girdled before they deteriorate further. 
The yield will be provided in the first instance by girdling teak trees, and 
the order in which this girdling is to be carried out during the first period 
must be prescribed. The yield for 32 years should be 32,000 sound teak, which 
will be girdled, and as there are 31,523 sound teak above 7 feet in girth now 
standing there should be no danger of the forest being overworked. 
In prescribing the order of girdling the following points have been kept in 
view : — 
(i) The present state of the growing stock, the number of sound teak 
above 3 feet in girth per 100 acres, and the number of unsound 
teak above 3 feet in girth, in each compartment. 
(ii) The advisability of restricting the areas to be girdled in each sub- 
period to two or at the most three separate blocks of forests. This 
is necessary to facilitate control and extraction. It is advisable 
to have extraction going on in two or more drainages at once, in 
order that the contractors may not be all crowded together and 
that the streams may not become much blocked by falling trees, 
etc., as when left for many years unvisited they are very apt to 
be so. Contractors also prefer to have a certain drainage recog- 
nised as belonging to them and will sometimes work difficult forest 
in one valley rather than move a long distance to another. 
