Important: Safety Warning
This page contains instructions involving gunpowder or other explosive or pyrotechnic compositions. Preparing explosives as described has caused severe injuries and deaths, and is illegal in most places.
This information has been left in for historical purposes but should not be acted upon.
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Yellow Stain for Marble
Tincture of gamboge, turmeric, or saffron. (See No. 2036.) phial. (See No. 2053.) The composition (see No. 2054) is next rammed tightly into Marble. the case (see No. 2052), which is supported by a closely fitting mould during this operation, finishing with a small charge of gunpowder to explode when the rocket goes out. The top of the case is then stopped with clay and substances not having a very great affinity, a conical cap fastened on, to decrease the care should be taken in the use of marble resistance of the air in its upward flight; and