Account of the Progress of the Geological Survey in Scotland, illustrated by Maps and Sections
The object of the Geological Survey is to ascertain in detail the geological structure of the United Kingdom, and to publish the results in maps, sections, and descriptive memoirs. The Ordnance maps form the groundwork on which these geological investigations proceed; and as no district is examined until these maps are ready, the progress of the Geological Survey is guided in no small degree by that of the Ordnance engineers. In Scotland, the geological mapping has hitherto been conducted wholly upon the county maps on the scale of six inches to a mile, and the advantages of so large a scale are such, that although the work is finally reduced and published on the scale of one inch to a mile, no county is surveyed until its six-inch maps are ready for use.