Forster, Francis, (1831). ‘Observations on the South Welsh Coal Basin’, extract from Transactions of the Natural History Society of Northumberland, Durham and Newcastle. v1,Forster, Francis, (1831). Observations on the South Welsh Coal Basin, extract from Transactions of the Natural History Society of Northumberland, Durham and Newcastle upon Tyne, 1831. v1, pp 82 116 + foldout plate, a hand coloured engraving Section from North to South Across the South Welsh Mineral Basin, 22 x 28cm, 1: 240 scale. Text and plate age toned and clean. In very good condition.