J 8 Indian Forest Records. [Yol. YI 
Results of experiments with thitsi when applied to a soft wood and a hard 
wood —contd. 
Serial 
No. 
Varnish how prepared. 
Time 
taken to 
dry in 
days. 
1st coat 
only. 
Remarks. 
13 
Thitsi -f. 20 per cent. 
Ferric oxide + 10 per 
1JS. 
A quick drier and would make a useful 
varnish, but not as good a gloss as 
cent. Chir turpentine. 
1J H. 
Nos. 1 and 5. Not affected by 
the sun and the gloss improved in 
the sun. 
14 
Thitsi -f- 25 per cent. 
Ferric oxide + 25 per 
qs. 
A good drier, and could be used ; of 
inferior gloss to No. 13 but of very 
cent. Boswellia oil. 
11 H. 
fair appearance. Unaffected by the 
sun. 
15 
Thitsi -f- 5 per cent 
2 S. 
Could be used but dries slower than 
Ferric oxide 
3 H. 
Nos. 12, 13 and 14; has a good 
gloss and would probably make a 
good lacquer. Not affected by the 
sun. 
16 
Thitsi -f- 2 per cent. 
Manganese dioxide. 
3 S. 
4 H. 
No use to the cabinet-maker. 
17 
Thitsi -f- 50 per cent, 
turpentine + 20 per 
1 S. 
A good varnish having a rich brown 
colour and very fair gloss, but is only 
cent. Ferric oxide. 
1 H. 
suitable for varnishing hard woods. 
Keeps an excellent appearance in the 
sun, but colour becomes somewhat 
lighter. 
18 
Thitsi + 2 per cent. 
Formaline. 
Over 10 
days. 
No use to the cabinet maker. 
19 
Thitsi -f- 5 per cent. 
Do. 
Ditto. 
Formaline. 
Note. A thick coat was applied to each specimen of wood and they were then 
left to dry under cover. 
S. = Soft-wood. 
H. = Hard-wood. 
From the above table it will be seen that the firm report very favour¬ 
ably on samples Nos. 1, 5, 13 which, they consider, would be suitable for 
their work ; their report, however, was given before the outdoor dura¬ 
bility tests were carried out. It is, however, doubtful whether the 
effect of sunshine is of much importance, in the case of varnishes used 
solely for furniture and indoor decoration. The drying capacity of 
varnishes Nos. 1 and 5 are not good, but the splendid surface obtained 
to a certain extent compensates for this drawback. 
Varnish No. 13 (containing ferric oxide as a drying agent), which 
the firm considered the third best for their purposes, is a quick drier ; 
and as the action of the sun does not affect the colour in any way, it 
would probably be superior to the other two samples. 
U 114 J 
