Pyrotechnical sponge


  • Webster's Revised Unabridged Dictionary
    • Pyrotechnical sponge a substance made of mushrooms or fungi, which are boiled in water, dried, and beaten, then put in a strong lye prepared with saltpeter, and again dried in an oven. This makes the black match, or tinder, brought from Germany.
    • Pyrotechnical sponge See under Sponge.
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