Tube

of tin plates are the best for service. Tubes must pa through a guage of ²⁄₁₀ of an inch diameter. The composition is mealed powder, mixt up stiff with spirits of wine. They are made up in bundles of 100 each. Length of tin tubes. | Length. | Kind of Ordnance. | | Heavy. | Medium. | Light. | Howitzer. | Land Mortars. | Sea Mortars. | | Inches. | Pr. | Pr. | Pr. | Inch. | Inch. | In. | | 12 | ·2 | — | — | — | — | — | 13 | | 8 | ·8 | 24 | | 24 | — | — | — | — | | 8 | ·2 | 18 | | 18 | — | — | — | — | | 7 | ·75 | 12 | | 12 | — | — | 13 | | 10 | | 6 | ·8 | 9 | | 9 | — | — | — | — | | 6 | ·5 | 6 | | — | 24 | 8 | | 10 | | — | | 5 | ·9 | 3 | | 6 | | 12 | 5 | ¹⁄₂ | — | — | | 5 | ·0 | — | — | — | — | 8 | | — | | 4 | ·75 | 1 | ¹⁄₂ | 1 | ¹⁄₂ | 6 | — | — | — | | 4 | ·2 | — | — | — | 4 | ²⁄₅ | 5 | ¹⁄₂ | — | | 3 | ·6 | — | — | — | — | 4 | ²⁄₅ | — | If tin tubes get damaged by wet, the composition may be cleared out of them, and they may be fresh filled. If spirits of wine cannot be had, good rum or brandy will answer the purpose.