Part III.] Raitt : Bamboo as Material for Paper-pulp. 
15 
juring and possibly destroying the capacity of the plant for rapid and 
regular natural reproduction which is one of its chief recommendations 
for our purpose. As a matter of interest and information and to illus¬ 
trate the changes which occur with maturity, an analysis of it is given 
when three parts grown, at which age the branches begin to sprout and 
lignification begins. At the half-grown stage there is no lignin. I also 
include, for comparative purposes, analyses of a typical pecto-cellulose 
(Bhabur grass), a cereal straw, and a ligno-cellulose (Spruce wood). 
17. In the selection of samples for analysis it has not been possible 
to obtain accurate evidence of age in all cases. The Forest Economist 
has pointed out that except in the case of the one year old culms, age 
must be a matter of considerable uncertainty. In the following table, 
specification as to age may be accepted as correct in the case of one year 
old and as probably correct in the case of two years old bamboos. These 
latter may be older but not younger. No. 6 is certainly more than two 
years, but may be three, four or older. 
TABLE IV. 
Analyses of absolutely dry seasoned bamboo on samples representing whole 
culm. 
No. 
— 
Water 
extract. 
Fat and 
wax. 
Pectose. 
Lignin. 
Cellu¬ 
lose. 
Ash. 
100 
1 
Young culm, -f grown 
13-10(a) 
1 
•75 
24-48 
1 
5-62 
56-05 
2-61 
2 
B. Tulda, 1 yejar 
11-40 
•90 
22-09 
13-33 
52-28 
2-72 
3 
Ditto 2 years 
7-86 
1-01 
24-33 
13-80 
53-00 
2-56 
4 
B. polymorpha, 1 year 
11-60 
1-07 
17-95 
15-66 
53-72 
4-73 
5 
B. polymorpha, 2 years 
8-95 
1-05 
19-55 
15-74 
54-71 
3-97 
6 
Ditto 3 years or 
more. 
6-90 
•95 
21-57 
15-96 
54-62 
2-18 
7 
B. arundinaceci, 1 
year. 
12-42 
1-15 
21-95 
15-46 
49-02 
2-56 
8 
B. arundinacea, 2 
years. 
8-48 
1-17 
24-39 
15-64 
50-32 
1-60 
9 
C. pergracile, 1 year 
11-57 
1-04 
20-74 
14-96 
51-69 
3-37 
10 
Ditto 2 years . 
7-96 
•92 
23-09 
15-30 
52-73 
2-57 
11 
Melocanna b., 1 year 
15-66 
1-77 
10-54 
21-43 
50-60 
3-05 
(a) No solid starch. 
[ 195 ] 
