22. The next colour that we will deal with is the yellow. The
composition for this colour is a very satisfactory one, on account of
its having no tendency to deterioration from damp. There are many
formulas used for this colour directing the use of the nitrate of soda.
This salt is, if anything, more difficult to keep dry than the nitrate
of strontia. I therefore have abandoned it for another preparation,
which I believe to be _as effective_ and thoroughly permanent. I
recommend the following for
GOLDEN-YELLOW STARS.
No. 6.
Chlorate of potash 20 parts.
Nitrate of baryta 30 „
Oxalate of soda 15 „
Sulphur 8 „
Shellac 4 „
If it be thought advisable to give the stars made from this formula a
tailed appearance, add one part of fine charcoal. The composition is to
be moistened with the shellac solution. The stars form a beautiful
contrast with those of an intense blue.