Abstract
In 1825 topographic mapping in Ireland commenced under the direction of Thomas Colby, who attempted to instigate a geological survey at the same time. John W. Pringle, a fellow Royal Engineer, took charge of the geological activities in 1826, but soon discovered that the surveyors, working in the northern part of the country, and who were not trained geologists, were ill-equipped for the task. He produced an instruction manual for their use, but the geological programme was terminated in 1828 before many tangible results, other than some crude cross-sections, were produced. The programme was resurrected under Joseph Ellison Portlock and ran until 1840. The civilian-based Geological Survey of Ireland was established in 1845 and completed the primary geological mapping of Ireland in 1890.
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