Indian Forest Records. 
[Vol. YI 
n 
The following are some of the results obtained by treating Finns 
longifolia broad gauge sleepers in the United Provinces treating tanks :— 
TABLE XXV. 
Experiments carried out with Pinus longifolia or ‘ Chir i broad gauge 
sleepers in the United Provinces Open Tank installations, at 
Kathgodam , Tanakpur and Hardwar, to ascertain the necessary period 
of immersion in order to make the sleepers take up 15 lbs. of oil each. 
Serial 
No. of 
experi¬ 
ment. 
No. of broad 
gauge sleep¬ 
ers on 
which the 
average is 
based. 
Total 
period of 
immer¬ 
sion, in 
hours. 
Temperature of the oil. 
Average 
amount of 
oil absorb¬ 
ed per 
sleeper, 
in lbs. 
Hem arks. 
(i) Heart-wood Pinu 
s longifolia broad gaugz 
sleepers. 
1 
20 
24 
Heated to 81° C. for 4 
hours and allowed to 
cool to 43°C. 
16-4^ 
1 
2 
20 
24 
Heated to 80°C. for 4 
hours, 20 hours cooling 
to 42°C. 
15-4 j 
1 
Seasoned sleepers. 
Experiments carried 
out by Forest Eco¬ 
3 
15 
24 
Heated to 86° C. for 4 
hours, dropping to 
41°C. 
16-1 
nomist at Kathgodam 
in April 1914. 
4 
10 | 
17 
Heating to 80°C., drop¬ 
ping to 45°C. 
10-0 
J 
20 
24 
Heating to 80°C., drop¬ 
ping to 40°C. 
8-8 
Seasoned sleepers, which 
were launched for float¬ 
ing purposes and taken 
out of the stream 18 
days before treatment. 
Treated by the Forest 
Economist at Kath¬ 
godam in April 1914. 
(5 
7 
15 
Heating to 80°C. for 2£ 
hours. 
12-3 
Well-seasoned sleepers. 
Experiments carried out 
by J. Donald, Esq., and 
the Senior Provincial 
Service Class in April 
1914 at Kathgodam. 
7 
19 
16 
Heating to 83°C., drop¬ 
ping to 52°C. 
13-2 \ 
Thoroughly seasoned 
8 
19 
19 
Heating to 93°C., drop¬ 
ping to 60°C. 
14-4 
► 
heart-wood sleepers, 
containing very little 
sap. Experiments 
9 
18 
20 
Heating to 93°C., drop¬ 
ping to 50° C. 
16-6 | 
y 
carried out by Forest 
Economist at Tanak¬ 
pur in January 1915. 
10 
18 
26 
Heating to 85°C. . 
13-1 
Seasoned sleepers contain¬ 
ing no sap ;the sleepers, 
however, though sea¬ 
soned, were damp due to 
the monsoon rains. 
Treated by C. E. C. 
Cox, Esq., Assistant, 
Forest Economist at 
Hardwar, in August 
1915. 
Total . 
166 
209 
.... 
136-3 
Average 
1 
20-9 
Heated to84°C., dropping 
to 47°C. 
: 13-6 
L 202 ] 
