20. The next formulas that I shall give are two which I have
occasionally used and found effective. Their merit is that they possess
a very intense illuminative power; their colour, however, is not so
intense as that of those which I have already given. They have also the
advantage of being very readily ignited, but care must be taken not to
expose them to a high temperature in drying. The following are their
formulas:—
PALE ROSE-COLOURED STARS.
No. 4.
Nitrate of strontia 8 parts.
Chlorate of potash 4 „
Sulphur 3 „
Sulphuret of antimony 2 „
Take especial care that the nitrate of strontia used in this formula be
very dry.