Stock Photo - An engraving depicting Major Richard Maitland 's fog signal gun. At c was a series of chambers which enabled many charges to fire in rapid succession. The bell-shaped mouth projected the sound over the sea in the direction required. This apparatus had a short life as it was discovered that guncotton produced a better sound than gunpowder. Major Richard Maitland (1714-1763) a British Army officer who served in the Royal Artillery. Dated 19th century

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