12 
Indian Forest Records. 
[Vol. Yf 
group of experiments deals with salt solutions, such as Atlas , a patent 
solution, which is poisonous ; Be'llit, another patent salt, made up of 
80 per cent. Sodium Fluoride , 12-5 per cent. Dinitro-phenol and 6‘5 per 
cent. Aniline ; the third salt is composed of 3 5 per cent. Chloride of 
Zinc, 3-5 per cent. Sodium Fluoride and the rest water, while Hylinit is a 
patent solution, the composition of which is unknown though it is stated 
to be non-poisonous. 
The method by which the timber was treated with Atlas was to 
immerse the specimens in a 20 per cent, cold solution for 24 hours. Con¬ 
centrated Be Hit was mixed in 44 parts of water and the specimens im¬ 
mersed for 48 hours, the solution having been heated to 120°E. in the 
init.al stages. In the case of Chloride of Zinc and SodAum Fluoride , a 
7 per cent, solution was made up and the timber left to soak for 12 days, 
while a 10 per cent, solution of Hylinit was employed and a 24 hours- 
immersion period given to the specimens. 
Diageam IV.* 
Diagram IY illustrates the durability of the treated and untreated 
specimens in each group of experiments. 
A glance at this digram shows that the general durability of the 
treated specimens is below that of those treated with oil. 
To determine the relative value of these salts, Table IV has been 
prepared :— 
TABLE IY. 
Treated. 
Untreated. 
Antiseptics with 
which the different 
species of timber were 
treated. 
Number of 
years under 
observation. 
Number 
origin¬ 
ally 
laid 
down. 
i Number 
remain¬ 
ing. 
Average 
durability, 
in years. 
Number 
origin¬ 
ally 
laid 
down. 
Number 
remain¬ 
ing. 
Average 
durability, 
in yearn. i 
Yrs. mos. 
Yrs. mos. 
Yrs. mos. 
Atlas solution . 
5 10 
12 
4* 
4 6 
12 
21 
2 10 
B611it 
5 7 
12 
3 
3 4 
12 
3 
2 6 
Sodium Fluoride and 
Chloride of Zinc. 
5 7 
12 
6 
4 5 
12 
2 
2 7 
Hylinit 
5 5 
12 
4 
3 9 
12 
4 
2 11 
* This will be found in the pocket at the end of this publication, 
t Note. —These specimens are now missing, so the experiment has had to be closed. 
[ i« ] 
