VOL. XIV. (1) FOREST BED—-GEOLOGY 29 
some 30 years. The observations in my own district have 
proved the occurrence there of these movements of land 
in the past,’ and the extension of them over the area of the 
Severn Estuary is indicated pretty clearly by the Westbury 
Post-Glacial beds. 
De La Beche, in his “ Report on the Geology of Corn- 
wall and Devon” (pp. 417-419), mentions the occurrence 
of submarine forests on the coasts of Devon, Cornwall, 
and West Somerset, at Char, near Lyme Regis; at Tor Bay ; 
Millendreth Bay; Mainporth; between Mawnan and Fal- 
mouth; Porthleven, near Helston; Mount’s Bay; in the 
Hayle estuary at the mouth of the Camel; Perran Porth; 
Lower St. Colomb Porth; Mawgan Porth;: Braunton 
Burrows; at Porlock and Minehead ;_ Bridgewater ; 
Stolford, &c. 
Detailed sections of some of these on the Bristol Channel 
will be found in the papers of Strahan and Sollas already 
quoted. In the admirable series of papers by the late Mr. 
Pengelly, read before the Devonshire Association for the 
Advancement of Science, the Royal Institution of Great 
Britain, and the Royal Institution of Cornwall, the insula- 
tion of St. Michael’s Mount, and other cognate Post-Tertiary 
movements of the land are most interestingly discussed : 
they should be read by everyone studying this subject. 
Finally, the object of this paper is to show that the 
movements of the land so generally exhibited on the south- 
west coast of England and Wales, are related to those 
investigated by myself on the north-west coast. 
The occurrence of superimposed beds of peat renders 
correlation difficult, but I am pretty well convinced that the 
1 See “ Oscillations in the Level of the Land as shown by the Buried River Valleys 
and Later Deposits in the neighbourhood of Liverpool.” (Geol. Mag., pp. 488-492; 1896.) 
Also “ The Geology and Physics of the Post-Glacial period, as shown in the Deposits and 
Organic Remains in Lancashire and Cheshire.” (Proc. L’pool. Geol. Soc., Session 1871-72, 
pp- 36-88.) In this paper the data upon which these movements of the land are inferred 
are given in detailed Maps and Sections. 
