. Delineations of the north western division of the county of Somerset. Natural history; Caves. [from old catalog]. 318 APPENDIX A. the covering of alluvium.* Hence it is evident that at the time of the Roman occupation, the surface of the peat was more generally exposed, and protected from inundation, either by its own natural level, or more probably by arti- ficial embankments, which there is historical authority for ascribing to Roman power and ingenuity in many other parts of England. DEPOSITS OF TUFA. One more recent change of the earth's surface, may be noticed within our district, the d
. Delineations of the north western division of the county of Somerset. Natural history; Caves. [from old catalog]. 318 APPENDIX A. the covering of alluvium.* Hence it is evident that at the time of the Roman occupation, the surface of the peat was more generally exposed, and protected from inundation, either by its own natural level, or more probably by arti- ficial embankments, which there is historical authority for ascribing to Roman power and ingenuity in many other parts of England. DEPOSITS OF TUFA. One more recent change of the earth's surface, may be noticed within our district, the deposition of tufa from springs charged with calcareous matter. The best example of this occurs on its eastern boundary, at the foot of Men- dip. On the side of the hill above Sutton, is a spring called the " petrifying spring," which has formed consi- derable masses of rock, that prove on examination to consist of an indurated tufaceous mass, containing land- shells, and impressions of blades of grass and other vege- table matter. * A large quantity of Roman coins, chiefly of the Emperor Conslantine, have been recently discovered near Congresbury, a considerable distance from the base of the hills, on the borders of the marsh, which must have been formerly a Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Rutter, John, 1796-1851. London, Longman, Rees, and co. [etc. ]
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