§0 Indian Forest Records. [Vol. III. 
brush the preparation could in no case penetrate to the centre of the 
timber, the calculations in this case are based on superficial area 
only and not by volume : — 
Regis¬ 
ter No. 
Species. 
Superficial 
area of 
piece treated. 
Weight of 
specimen 
before 
treatment. 
Weight of 
specimen 
after 
treatment. 
Weight of 
solution 
taken 
up. 
Amount 
required 
per 
sq. ft. 
sq. ft. 
lbs. OZ. 
lbs. OZ. 
lbs. OZ. 
OZ. 
j 
Boswellia serrata 
1-055 
0 15 
1 3 
0 4 
3-79 
3 
Pinus longifolia 
0-722 
1 7 
1 8 
0 1 
1-39 
5 
Pinus excelsa 
0-722 
1 0 
1 1 
0 1 
1-39 
7 
Picea Morinda 
•722 
1 12 
1 1*25 
0 0-25 
0-35 
9 
Abies Pindrow . 
•722 
0 12 
0 13-5 
0 1-5 
2-08 
11 
Pterocarpus mac¬ 
rocarpus. 
1-055 
2 8 
2 8-25 
0 0-25 
0-24 
13 
Bornbax malabari- 
cum . 
1-055 
1 3 
1 5 
0 2 
1-89 
15 
Bauhinia retusa . 
1-055 
2 2 
2 3 
0 1 
•95 
17 
Dipterocarpus 
tuberculatus. 
1-055 
1 14 
1 14-5 
0 0-5 
0-47 
19 
Anogeissus lati- 
folia. 
1-336 
3 13 
3 14 
0 1 
0-75 
21 
Odina Wodier . 
1-055 
1 6 
1 7 
0 1 
0-95 
23 
Shorea robusta 
1-055 
2 13 
2 14 
0 1 
095 
The amount of absorption is generally considerably less than was the 
case when timbers of similar species were treated by immersion in the 
other solutions. The results are without doubt far above what they 
would be were the work to be done on a large scale, so that the above 
figures are of no real value except to show comparisons of absorption. 
All the softer timbers with the exception of No. 7 have absorbed, how¬ 
ever a considerable quantity of the preservative, a not unnatural result, 
( 153 ) 
