Report on the Geology of the County of Londonderry, and of parts of Tyrone and Fermanagh. Examined and escribed under the Authority of the Master General and Board of Ordnance. Dublin: Andrew Milliken & Hodges and Smith, 1843. Pp xxiv, 784. Half calf, cloth boards, title label in gilt to spine. A very good copy.

Illustrated with a fold-out hand-coloured frontispiece map of county Derry, engravings in text, plates at rear (many hand-coloured and folding).

This is the first report made by the geological department of the Ordnance Survey of Ireland. It describes and illustrates the geology and palaeontology of Derry and parts of Tyrone and Fermanagh.