Part IV.] R. S. Pearson: Antiseptic Treatment of Timber. 17 
various diagrams. Leaving out of consideration the experiments with 
crude Coal-Tar , Tar from Pinus excelsa, Burma oil and Liquid Fuel , 
diagrams II and III deal with Coal-tar creosotes , while diagram IV 
demonstrates the durability of timbers treated with salt solutions. All 
these experiments have been in progress for five years or more, but we 
may take the results at exactly five years, so as to bring all results down 
to a common denominator. The results are as follows :— 
TABLE VII. 
r 
l 
Name of 
antiseptic. 
Greatest 
possible 
life of all 
the speci¬ 
mens of 
each group, 
added 
together 
Years. 
Avenarius 
bolineum. 
Car- 
r 
Jodelite 
Solignum 
Green oil 
Cresoyle 
Anthrol 
^ 60 ] 
! 
i 
i 
j i 
Total Average 
60 
Average per speci 
men. 
5 
Atlas 
Bellit . 
Sodium Fluoride and 
Chloride of Zinc. 
Hylinit 
1 
I 
I 
i 
i 
I 
60 
Total Average 
Average per specimen 
60 
Actual total life 
OF ALL SPECIMENS. 
Number 
OF SPECIMENS 
REMAINING, OUT OF 
12 LAID DOWN. 
• 
Treated. 
Untreated. 
Treated. 
Untreated 
Yrs. mos. 
54 9 
Yrs. mos. 
31 4 
8 
3 
51 4 
26 8 
8 
3 
54 2 
32 2 
9 
4 
58 9 
31 7 
9 
4 
56 9 
25 2 
11 
3 
60 0 
24 6 
12 
3 
55 11 
28 7 
4 8 
2 4-5 
! Average 
f 95 
J 
Average 
33 
49 2 
31 9 
5 
3 
37 0 
28 4 
4 
4 
49 0 
28 11 
8 
6 
42 9 
32 6 
5 
4 
44 6 
30 4 
Average 
J 5-5 
r 
Average 
3 8-5 
2 6-3 
3-7 
[ 147 ] 
D 
