58 
Indian Forest Records. 
[Vol. III. 
of the piece. The following table demonstrates the varying quantities 
absorbed by different species after immersion for ten minutes in a solu¬ 
tion, heated to a few degrees below boiling point. As the solution did 
not in all cases penetrate to the centre of the specimen, the calculations 
have been based, not only on the cubical contents of the ti eated piece 
but also on its superficial area 
Superfi¬ 
Volume 
of piece 
treated. 
Weight of 
(weight of 
W eight of 
Absorption 
Absorp¬ 
Register 
No. 
Species. 
cial area 
of piece 
1 specimen 
1 before 
specimen 
1 after 
solution 
absorbed by 
per superfi¬ 
cial surface 
tion per 
cub. ft. 
treated. 
immersion. 
j immersion. 
specimen. 
in sq. ft. 
sq. ft. 
cub. ft. 
lbs. 
, oz. 
lbs. oz. 
lbs. 
oz. 
OZ. 
OZ. 
1 
Boswellia ser- 
1-55 
0-13 
4 
6 
4 11 
0 
o 
3*23 
37-7 
ruta. 
116-6 
3 
Finns longi¬ 
I’ll 
0-06 
1 
9 
2 0 
0 
7 
6-31 
5 
folia. 
Finns excelsa. 
I'H 1 
0'06 
1 
7 
1 9 
0 
2 
1-80 
33-3 
7 
Ficea Mor- 
1*55 
0*11 
3 
3 
3 6 
0 
3 
CO 
CO 
273 
inda. 
1-80 
33-3 
9 
Abies Findrow 
I'll 
0-06 
1 
15 
2 1 
0 
2 
11 
Fterocarpus 
1*55 
0-12 
7 
9 
7 11 
0 
2 
1-29 
16-6 
13 
macrocarpus. 
Bombax mala- 
1-55 
0-12 
2 
8 
2 11 
0 
3 
1-93 
25-0 
15 
baricum. 
Bauhinia re- 
l‘o5 
012 
5 
8 
1*29 
16-6 
tusa. 
5 
15 
6 1 
0 
2 
17 
Dipterocarpus 
! 1-55 
o-ii 
6 
0 
6 1 
0 
1 
0-65 
9-09 
tuberculatus. 
1*80 
33-3 
19 
Anogeissus 
111 
0*06 
3 
6 
3 8 
0 
2 
latifolia. 
made.) 
21 
Odina Wodier. 
(No 
estimate 
23 
Shorea robusta 
1*55 
0*11 
7 
4 
7 5 
0 
1 
0*65 
9-09 
The above figures demonstrate that the amount of absorption by a 
hardwood such as Shorea robusta (Sal) is hardly one-third that of the 
softer timbers. The conifers would be expected to absorb about the 
same quantity of the oil and this was actually the case with Finns 
excelsa , Ficea Morinda and Abies Findrow , while Finns longifolia 
absorbed more than double the amount per square foot. This variation 
is not easy to explain ; it is partly attributed to the excessive dryness of 
the timber when treated and to slight splits occurring in the specimen. 
( 131 ) 
