content_ocr_temporal_enriched_047_8 (Q1742)

of the same early breech-loading cannon for use on ship-board differs only from the foregoing in having a wooden frame. These cannon were built up of iron strips surrounded by iron rings—a method which continued for several centuries. The cannon often had trunnions, and were mounted as wall pieces, or, attached to wooden frames, were used as in the illustration from Grose's "Military Antiquities."