Part IV.] Puran Sing : Note on Burmese Varnish. 
305 
From the inferences drawn from these experiments it will be 
noted that the conditions which are essential for the drying of the 
Burmese varnish are identical with those which must obtain in the 
case of Urushi or the Japanese lacquer. It is to be further noted 
that the admixture of thitsi with sesamum oil as practised in cer- 
tain stages of the Burmese lacquering art is not justified. 
Attempts were made to discover some substance which, mixed 
with the varnish, would make it more quick-drying, but these have 
so far proved unsuccessful. 
SUMMAPT AND GENERAL CONCLUSIONS. 
Se-paration of Constituents. 
Pure Thitsi extracted with hot alcohol. 
Residue shaken with dry ether 
and filtered. 
Alcoholic extract contains 
Vrushic acid 
(about 85 per cent.'. 
Residue boiled 
with water. 
Filtrate, di.=tilled," 
dried and again 
extracted with hot 
alcohol. 
Residue 
oily or faiiy matter 
(small quantity). 
Extract contains 
last traces of 
XJtuxMc acid. 
Final residue is 
Diastatic matter 
(about 2 per cent.). 
(Total nitrogen in this 
diastase = 4'7 per 
cent.) 
Aqueous extract 
contains Gum. 
(Gives the ordinary 
reactions of gum 
arabic. Amount 
about 3 per cent.) 
The present investigation has proved with the aid of the method 
outlined aboVe that the most important and main constituent of the 
c 2 
