A fine folding geological map of the country with bright original hand colouring illustrating the geological strata, an inset map of the Shetland and Orkney Islands to the upper right of the north east sheet plus 9 sections from around the country underneath also coloured, the map printed over four parts, each measuring c. 76 x 65.5 cm, i.e. 159 x 136 cm if joined, each part dissected into 24 sections and mounted on linen, marbled paper to each of the folded end sections with miniature outline maps to one side of each part, publisher’s green morocco slipcase, gilt decorated spine with a dark red gilt lettered label, gilt arms of Prince Albert (to whom the map is dedicated) to the upper board. The upper corners of the case sometime neatly repaired, small pinholes to the corners of the maps from previous use, a very attractive example.