Part II.] 
Caccia : Development of Sal. 
195 
Figures are not at present available showing either the quantity of 
small wood (firewood) which may be expected from Sal trees of different 
girths, or the proportion of small wood to timber. The following table 
gives the results of experiments carried out by Mr. H. H. Haines, I.F.S., 
to determine the average outturn in cubic feet solid of Sal trees of differ- 
ent mean girths in the Jalpaiguri Reserves, Eastern Bengal. 
Jalpaiguri Division, Eastern Bengal. 
Determination of factors for the conversion of trees into cubic feet. 
ispecies. 
Diam- 
eter 
Num- 
ber 
of 
Average 
girth in 
1 
Aver- 
age 
heiirht 
Numbfr of 
Cubic feet 
h'UEL. 
Num- 
ber 
of 
cubic 
Total 
Number 
of cubic 
Average 
cubic 
feet 
Re- 
MARkS. 
Class. 
trees 
meas- 
ured. 
inches. 
in 
feet. 
Stacked. 
Solid. 
feet 
Tim- 
ber. 
feet 
Solid. 
Solid per 
tree. 
I 
2 
3 
4 
5 
6 
7 
8 
9 
10 
II 
Sal 
>1 
3" - 9" 
9"— 15" 
15"— 2'" 
i5”— 18" 
iS" 2l" 
lOI 
08 
lo 
31 
19 
i8'oo 
37'63 
S5‘35 
5''6o 
58‘8o 
40 
63 
70 
70 
83 
843 
2i98'24 
i636'2o 
2064 
1330 
48171 
1256-13 
933 '54 
1179-43 
760-00 
785 
546 
710 
665 
481-71 
2041-13 
1479-54 
1889-43 
1425*00 
4-77 
30-01 
73-98 
60-95 
75-00 
Co- effi- 
cient 
used =y. 
Volume of split wood. — The timber and the small wood yielded by 
Sal trees of different girths is sometimes split and stacked to form fire- 
wood. Data are then required to show the average outturn in stacked 
cubic feet that may be expected in each case. In addition, in order to 
convert the stacked volume into solid cubic contents, separate co-effi- 
cients must be used both for the stacks obtained from the split timber 
and for those formed of the small wood. No such co-efficients are at 
present available. 
In the Lansdowne Range forests of the Ganges Division, United Pro- 
vinces, Sal trees (lowest quality of locality) .3' 4' in girth are said to yield 
an average of 45 stacked cubic feet of fuel. Again, in the Bhira Range 
forests of the Kheri Division, United Provinces, 400 stacked cubic feet 
of six-months dried split Sal fuel are considered to be equivalent to 200 
solid cubic feet (co-efficient 0’5), and to 100 maunds of firewood.* 
*1 niaimd=i82i Ib.s. Mr. P. H. Clutterbuck, I.F.S., writes ; — The formula 4 stacked 
cubic feet = 2 cubic feet solid = l maund or 82^ lbs. was arrived at after a great deal 
of experiment in the day.s when large quantities of fuel were being supplied to the 
Railway. The above formula represents measurements taken after 6 months’ 
seasoning.” 
