Memoirs of the Geological Survey of GB, v1, 1846. London: Longman et al. 531pp +5pp adv. + 9 plates at back of which 6 fold out, including 7 hand-coloured maps/sections. Hardback, rebound in Survey’s embossed blue cloth covers with original greenish brown spine glued on, gilt lettering and Survey crest. Considerable shelf wear with bumped corners and fraying at top and base of spine, but binding sound. Ex-library with label to front endpaper and stamp on back of title page. Pages clean with light age-toning. Of the 10 papers, the principle articles are: Henry De la Beche, On the Formation of the Rocks of South Wales and South Western England (pp1-296); Andrew C Ramsay, On the Denudation of South Wales and the Adjacent Counties of England (pp297-335); and Edward Forbes, On the Connexion between the Distribution of the existing Fauna and Flora of the British Isles, and the Geological Changes which have affected their area, especially during the epoch of the Northern Drift (pp336-432). Further details on request. Cover in fair to good condition. Text and Plates in good to very good condition.