oxide, zinc sulphide,
calcium carbonate, barium carbonate, calcium sulphate, lead white,
etc., turn brown to black, and no white lacquer can be obtained with
them.

_Red Pigments._--Vermilion and red oxide of iron. These two are used
for the red lacquer, but vermilion should be stoved at a low
temperature.

_Blue Pigment._--Prussian blue.

_Yellow Pigments._--Cadmium sulphide, lead chromate and orpiment.

_Green Pigment._--Chromium oxide (? Guignet's green).

_Black Pigment._--Lamp black. This is one of the pigments for black
lacquer, but does not give a brilliant colour, therefore it is better
to prepare the black lacquer by adding iron powder or some compound of
iron to the lacquer.

Various mixed colours are obtained by mixing some of the
above-mentioned pigments.

Examples of application are as follows:--

(1) _Golden Yellow._--Finished lacquer, 10 parts; gamboge, 1 to 3;
solvent, 5. If utensils are lacquered with this thin lacquer and dried
for about 2 hours in an air-oven at a temperature of 120 deg. C. a
beautiful hard coating of golden colour is obtained.

(2) _Black._--Black lacquer, 10 parts; solvent 2 to 4. Utensils
lacquered with this lacquer are dried for about an hour at 130 deg. to
140 deg. C.

(3) _Red._--Vermilion, 10 parts; finished lacquer, 4; solvent, 2. This
lacquer is dried for about an hour at 130 deg. to 140 deg. C.

(4) _Khaki or Dirty Yellow._--Barium sulphate, 100 parts; chromic
oxide, 3; finished lacquer, 20 to 25; solvent, 15. This lacquer is
dried for about half an hour at 160 deg. C.

(5) _Green._--Barium sulphate, 100 parts; chromic oxide, 20 to 50;
finished lacquer, 40 to 50; solvent, 20. This is dried for about 10
minutes at 160 deg. C.

(6) _Yellow._--Barium sulphate, 100 parts; lead chromate, 40; finished
lacquer, 40; solvent, 20. This is dried for about 15 minutes at 150 deg.
C.

Almost all pigments other than the above-mentioned are blackened by
contact with lacquer or suspend its drying quality.

Several organic lakes can be used for coloured lacquers, that is to
say, Indian yellow, thioflavin, and auramine lake for a yellow
lacquer; fuchsine, rhodamine, and chloranisidin lake for a red;
diamond sky blue, and patent nileblue lake for a blue; acid green,
diamond green, brilliant milling green, vert-methyl lake, etc., for a
green; methyl violet, acid violet, and magenta lake for a violet;
phloxine lake for a pink. These lakes, however, are decomposed more or
les