XVI.—Notes to accompany a Geological Map of the Forest of Dean Coal-field.

Abstract

The following notes were collected during the progress of the Ordnance Survey in 1830, but some additions were made at a subsequent visit to the Forest of Dean. It is desirable that I should acknowledge the several authorities from whom information has been obtained. From occasional intercourse with the Rev. W. D. Conybeare, I derived the little knowledge which gave rise to these notes. The memoir by Professor Buckland and the Rev. W. D. Conybeare, on the south-western coal district of England; as well as that by T. Weaver, Esq., on part of Gloucestershire; and the section of the Forest of Dean by D. Mushet, Esq.*, have served as foundations to the map † and the notes. Charles Bathurst, Esq., of Lydney Park, supplied the minute observations respecting that neighbourhood, particularly those relating to the fault between Lydney and Denbigh Lodge. D. Mushet, Esq. and Mr. Henry James, of the Forest of Dean and Lydney, greatly assisted me, not only in marking the outcrop of the beds of coal, but in pointing out where the best information could be obtained. Mr. Moses Teague, of Parkend, supplied the outcrop of the two upper beds of coal from actual observation; and the accuracy of the northern curve of the same beds was confirmed by Mr. James Bennett, of Drybrook, who has extensive works on the spot. From information supplied by Aaron Hale, of Coleford Meend, have been laid down the fault from Worcester Lodge to Bury Hill, and the probable range of