Newcastle: Andrew Reid, 1873, xlvii, 157, 32, xx pages, forty litho. plates (including coloured geological map of the Redesdale Ironstone District), interesting papers on the opening of bridges, coke production, diffusion of gases from coal, the use of compressed air, the Pictou coal field in Nova Scotia and the Redesdale Ironstone District in Northumberland, half calf binding. Board edges rubbed, minor stain to fore-edge, generally VG.