An encyclopedia article on common hemp (Cannabis sativa) as grown and processed in early nineteenth-century Britain. It covers sowing, harvesting, retting (water and dew), reeding, breaking, beating, heckling, and spinning, with the yarn reel measures and the use of hemp for cordage, sailcloth and cloth. It also notes secondary uses (oil, fuel, pest deterrent), substitute fibre plants, and hemp's importance to maritime trade, with import figures for 1788.