Editing Geological Survey of Great Britain and Ireland: A contemporary account of the Survey, 1897

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==== South-west England ====
 
==== South-west England ====
 
[[File:SummProg1897_FIG04.jpg|thumbnail|Part of Ordnance sheet 22, Sidmouth to Lyme Regis, the first completed sheet, geologically coloured (De la Beche's personal copy, 1834 colouring scheme).]]
 
  
 
The mapping which De La Beche began in the south-west of England was so rapidly executed by him, and the few assistants associated with him, that in a few years be had completed the geological investigation of the whole of Devon, Cornwall, and West Somerset. By the year 1839 the maps of this region, embracing no fewer than fourteen of the Ordnance sheets on the scale of one inch to a mile, were published geologically coloured. These maps were not executed with the detail and precision now attainable on the larger scale employed by the Survey. They were, however, much more minute than anything that had preceded them, and. they are still, to this day, the only available maps of the region which they depict. Besides the maps there appeared in 1839 the well known 'Report on the Geology of Cornwall, Devon, and West Somerset', by Henry T. De La Beche, F.R.S., &c., Director of the Ordnance Geological Survey' - which served as a model for the subsequent official memoirs of the Survey.
 
The mapping which De La Beche began in the south-west of England was so rapidly executed by him, and the few assistants associated with him, that in a few years be had completed the geological investigation of the whole of Devon, Cornwall, and West Somerset. By the year 1839 the maps of this region, embracing no fewer than fourteen of the Ordnance sheets on the scale of one inch to a mile, were published geologically coloured. These maps were not executed with the detail and precision now attainable on the larger scale employed by the Survey. They were, however, much more minute than anything that had preceded them, and. they are still, to this day, the only available maps of the region which they depict. Besides the maps there appeared in 1839 the well known 'Report on the Geology of Cornwall, Devon, and West Somerset', by Henry T. De La Beche, F.R.S., &c., Director of the Ordnance Geological Survey' - which served as a model for the subsequent official memoirs of the Survey.

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