VARNISHES 159 
Oil of lavender 10 ccm 77 min. 
Or: 
Gum sandarac 100 g 768 gr. 
Benzol - 400 ccm 6Y4 oz. 
Acetone 400 ccm 6Y, oz. 
Alcohol, 96% 200 ccm 3% oz. 
CELLULOID OR ZAPON VARNISH.— 
Pyroxyline or celluloid scraps 20g 154 gr. 
Amy]l acetate 1000 ccm 16 oz. 
Allow to stand for some time with frequent shaking until 
solution take place, and then allow to stand three or four days 
to settle. This takes a very long time to dry. Or: 
Pyroxyline or celluloid scraps 12¢ oF are 
Amyl acetate 400 ccm 6 oz. 
Benzol 400 ccm 6 oz. 
Acetone 200 ccm S02! 
This is also suitable for prints. A 5 per cent solution of 
pyroxyline in equal volumes of amyl acetate and alcohol can 
be used to protect metal work, can be applied either with a 
brush or spray, and is quite invisible ; sometimes butyl acetate 
is used instead of the amyl compound. Greater adhesion is 
obtained with the following : 
Pyroxyline 3751S 288 gr. 
Shellac 37.58 288 er. 
Amy] acetate 500 ccm 8 oz. 
Benzol 250 ccm 4 oz. 
Methy! alcohol 250 ccm 4 oz. 
The film thus obtained is not so lasting as the plain pyroxyline 
varnish. Black varnish may be made by incorporating lamp 
black, when the varnish will be more or less matt, or by the 
use of spirit-soluble nigrosine, when glossy surfaces will be 
obtained. Any coloured varnish may be made by dissolving 
oil-soluble aniline dyes in the solvents. 
