21 
Part V.] Pearson: Note on the Utilization of Bamboo. 
We are here chiefly concerned with the second species given in the 
above table, namely, Cepharlostachyum pergracile, or Tinwa bamboos. 
The countings made in 1910 showed the two sample plots to contain an 
average of 417 clumps per acre, containing 2,965 old and 435 new culms, 
or a total of 8T culms per clump. It was found that 413 new shoots 
were put out by these clumps during the rains of 1911, that is 8T old 
culms were capable of producing, as nearly as possible, one new culm in 
one year. In Lower Burma countings made by the writer of the report 
(see Appendix I) gave one new culm to every 2*93 old ones, or roughly 
one new to. every three old culms. The difference between the two re¬ 
sults obtained is very marked, but nevertheless agrees in every respect 
with the mode of growth of bamboos. In the second paragraph of this 
section it has been explained how the culms and clumps as a whole 
increase in size, namely, that both the size of the stem produced and the 
number of culms put out in any given year depend on the power 
of the root-stock to store up nourishment against the period during 
which it has to produce new shoots. 
Now the Tinwa bamboo clumps counted in Myitkyina Division by 
Mr. Buchanan were stated by him to be immature, while those counted in 
Lower Burma were somewhat over middle age, in other words, the root¬ 
stocks of the Myitkyina bamboos had not attained' the same 
power of accumulating nourishment as had those in the areas 
inspected in Lower Burma and hence the difference in their relative 
power of producing new shoots every year. 
In the foregoing paragraph, nothing has been said about the variation 
in climate in the two localities though, both areas, in which the countings 
were made, are typical bamboo areas for Upper and Lower Burma re¬ 
spectively. Without doubt the local conditions affect the growth of 
bamboos, so that the warm, damp, moist climate in Lower Burma no 
doubt partly accounts for the more favourable growth of Cephalostach- 
yum pergracile in that locality. 
4- Effect of cutting bamboos on the growth of the clump. 
Effect of cutting stems on the growth of the clump. —The general impres¬ 
sion arrived at after inspecting many areas in which fellings of 
bamboos have been carried on for many years, is that, in cases where a 
clump has been heavily cut over, the number of new stems put out is 
reduced according to the intensity of cutting, but that ultimately the 
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