Part III.] Beeson : Beehole Borer of Teak. 13 
Timber from the Moda bill forests is badly beeboled [F. C., Oct. 
1913], and it is noted that while trees of moderate girth show many 
beeholes on conversion, old trees of very large girth yield timber near 
the heart of good quality practically free from beeholes [F. C., 1919.] 
The Mohnyin Reserve lies on flat ground in the valley-plain of the 
Nanyin stream at an elevation of 500 ft. with a rainfall of about 70 
inches and a temperate climate. The teak forests are rich in mature 
trees and practically pure with bamboos absent or relatively scarce, 
but the reproduction is comparatively poor. 
For details as to the occurrence of the borer in Quarry Siding Planta¬ 
tion, Mohnyin Reserve, see pp. 60—66, and for conditions in the 
Bilumyo Regeneration Area see pp. 57-—59. The mean annual rainfall 
of the division is between 56 and 72 inches. 
4. Upper Chindwin. 
The borer is not notoriously abundant, but appears, from an exami¬ 
nation of the timber, to be regularly distributed and a permanent 
resident. The locality cited comprises the hill ranges lying between 
the Chindwin river above Kindat, and the Kabaw valley (Yu River); 
the elevation varies from about 500 to 3,000 feet; the forest is mainly 
deciduous, with occasional patches of ever-green; teak occurs up to 
about 1,500 feet and forms 5 per cent, to 10 per cent, of the growing 
stock. [D. F. O., Oct. 1913]. The rainfall is about 70-75 inches. 
Timber is very noticeably affected in the Kampat Reserve, Mawku 
working circle, and in the Ahlaw Reserve, Ahlaw working circle ; the 
borer is generally prevalent in all forests west of the Chindwin and is 
very seldom encountered to the east of the river. [B. B. T. C., Dec. 
1913.] 
5. Mu. 
The divisional officer and principal teak lessees agree that the borer 
is rarely found, but one observer states that large logs are generally, 
free from beeholes while small poles are invariably damaged [D. F. O., 
Nov. 1913.] More recently the Bombay-Burma Trading Corporation, 
state that no signs of the borer have been found, either in the vicinity 
of the Pyaungthwe and Yabin Reserves, which are dry teak forests 
on the east slopes of the Mu-Chindwin water-shed, or in the moister 
Budaung and Thaw reserves on the Mu-Irrawaddy water-shed in the 
east of the division. [D. F. O., Aug. 1919.] 
6. Myittha. 
The borer appears to be spread over all teak-bearing forests, and 
is particularly abundant in the Matu Reserve in the drainage of the 
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