42 
Indian Forest Records. 
[Vol. IY. 
(5) Possible factory sites. 
There are two possible factory sites. One is where the Thonze 
river cuts the railway at the village of Thonze, two miles south of 
Tharrawaddy railway station (see map), the other is near Insein on the 
Hlaing or Myitmaka river. Were the latter site to be chosen, the 
Thonze and Okkan bamboo areas could be worked together. The 
advantages of the latter site will be fully described under this head 
in the Okkan scheme. (See page 48, section 5.) 
The first suggestion is to have a mill at or near the village of Thonze, 
on the banks of the river. Such a place has distinct advantages. It is 
on the railway and also near a good perennial stream of water. It is 
12 miles by river from the edge of the bamboo area at Weywa ? and 20 
miles from the centre of the forests. From Thonze, to the junction of the 
river with the Myitmaka at Sangwe, is 6 miles and along this stretch 
of river small boats loaded with 2,500 to, 3,000 lbs. of rice ply without 
difficulty. From the junction of the rivers at Sangwe boats carrying 
10—12,000 lbs. of rice go down to Rangoon. It might be thought advis¬ 
able to place the factory at Sangwe, but this is not practicable, as the 
river overflows its banks in the monsoon, a circumstance which would 
practically stop all work during those months and possibly damage the 
mill. 
(6) Outturn. 
As will be done when calculating the outturn from the Okkan and 
Hlaing Yoma Reserves, the figures of yield for this reserve are based on 
the average outturn per acre of all the sample plots situated in the two 
bamboo areas, namely, those of the Thonze and Okkan Reserves. This 
has been done in order to obtain a more reliable figure, as the 
forests of both divisions are of the same type as far as bamboos are 
concerned. 
The area of the bamboo-yielding forests in the Thonze Reserve has 
been shown as 40,037 acres. From Appendix I it will be seen that an 
acre yields 8,254 lbs. of dry internodes of Cephalostachyum pergracile 
(Tinwa) and 9,255 lbs. of dry internodes of Bambusa polymorpha 
(Kyathaung). Thus the gross yield of pulpable material works out at 
312,288 tons, or, working on a 5-year rotation, the sustained yield of 
dry internodes comes to 62,417 tons per annum. 
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