A combustible preparation, formed of cotton strands, drawn into length, and dipped into a boiling composition of vinegar, saltpetre, and mealed d powder. After this immersion, it is taken out hot, and laid in a trough, where some mealed powder, moistened with spirits of wine, is thoroughly incorporated into the twists of the cotton, by roiling it about therein. They ara afterwards taken out separately, drawn through mealed powder, and hung upon a line to dry. They are then fit for service.