Purple Fire
The best recipe for purple fire is of 60 parts; 25 of nitre, 25 of nitrate of strontium, 7 of sulphur, 2 of realgor, and 1 of lamp-black.
Hop-scotch to hare-and-hounds, conjuring to chemistry, rabbits to rowing — the complete Victorian repertoire of things for a boy to do, set down with rules and diagrams.
The best recipe for purple fire is of 60 parts; 25 of nitre, 25 of nitrate of strontium, 7 of sulphur, 2 of realgor, and 1 of lamp-black.