Account of the Magnetical Observatory of Dublin and of the instruments and methods of Observation employed There

Dublin. University Press. 1842. First. p.p. 54 plus 5 plates - 13 bound with Rev. T.R. Robinson. Description of an Improved Anemometer. Dublin. Gill. 1851. p.p. 51. Inscribed by Robinson to Captain Lefroy on title page, bound with Humphrey, Lloyd. Notes on The Meterology of Ireland deduced from observations made in the year 1851. Dublin. Gill. 1854. p.p. 99 + map plus a further 311 pages relating to Balloon Ascents, the amount of The Radiation of Heat, at night from the earth, Magnetic Disturbances, the trans-velocity of earthquake waves. With folding maps, charts plates etc. All bound in fine three quarters calf marbled boards some inscribed to Captain Lefroy.