Order of the STRATA and their imbedded ORGANIC REMAINS, in the vicinity of BATH; examined and proved prior to 1799.

Strata. Thickness. Springs. Fossils, Petrifactions, &c. &c. Descriptive Characters and Situations.
1. Chalk 300 Intermitting on the Downs Echinites, pyrites, mytilites, dentalia, funnel-shaped corals and madrepores, nautilites, strombites, cochliæ, ostreæ, serpulæ Strata of Silex, imbedded.
2. Sand 70     The fertile vales intersecting Salisbury Plain and the Downs.
3. Clay 30 Between the Black Dog and Berkeley.    
4. Sand and Stone 30     Imbedded is a thin stratum of calcareous grit. The stones flat, smooth, and rounded at the edges.
5. Clay 15 Hinton, Norton, Woolverton, Bradford Leigh.    
6. Forest Marble 10   A mass of anomiæ and high-waved cockles, with calcareous cement The cover of the upper bed of freestone, or oolite.
7. Freestone 60   Scarcely any fossils besides the coral Oolite, resting on a thin bed of coral.—Prior Park, Southstoke, Twinny, Winsley, Farley Castle, Westwood, Berfield, Conkwell, Monkton Farley, Coldhorn, Marshfield, Coldashton.
8. Blue Clay 6 Above Bath    
9. Yellow Clay 8
10. Fuller’s Earth 6     Visible at a distance, by the slips on the declivities of the hills round Bath.
11. Bastard ditto, and Sundries 80   Striated cardia, mytilites, anomiæ, pundibs and duck-muscles  
12. Freestone 30   Top-covering anomiæ with calcareous cement, strombites, ammonites, nautilites, cochliæ hippocephaloides, fibrous shell resembling amianth, cardia, prickly cockle, mytilites, lower stratum of coral, large scollop, nidus of the muscle with its cables Lincombe, Devonshire Buildings, Englishcombe, Englishbatch, Wilmerton, Dunkerton, Coomhay, Monkton Coombe, Wellow, Mitford, Stoke, Freshford, Claverton, Bathford, Batheaston and Hampton, Charlcombe, Swanswick, Tadwick, Langridge.
13. Sand 30   Ammonites, belemnites Sand burs.
14. Marl Blue 40 Round Bath. Pectenites, belemnites, gryphites, high-waved cockles Ochre balls.—Mineral springs of Lincombe, Middle Hall, Cheltenham.
15. Lias Blue 25   Same as the marl with nautilites, ammonites, dentalia, and fragments of the enchrini The fertile marl lands of Somersetshire. Twerton, Newton, Preston, Clutton, Stanton Prior, Timsbury, Paulton, Marksbury, Farmborough, Corston, Hunstreet, Burnet, Keynsham, Whitchurch, Salford, Kelston, Weston, Pucklechurch, Queencharlton, Norton-malreward, Knowle, Charlton, Kilmersdon, Babington.
16. Ditto White 15
17. Marl Stone, Indigo and Black Marl 15   Pyrites and ochre A rich manure
18. Red-ground 180   No fossil known Pits of riddle. Beneath this bed no fossil, shells, or animal remains are found : above it no vegetable impressions. The waters of this stratum petrify in the trunks which convey it, so as to fill them, in about fifteen years, with red watricle, which takes a fine polish.—Highlittleton.
19. Millstone.     Impressions of unknown plants resembling equisetum.  
20. Pennant Street (sic)
21. Grays       Fragments of coal and iron nodules.—Hanham, Brislington, Mangotsfield, Downend, Winterbourn, Forest of Dean, Pensford, Publow, Chelwood, Cumptondando, Hallatrow near Stratford-on-Avon, Stonebench on the Severn, four miles from Gloucester.
22. Cliff     Impressions of ferns, olive, stellate plants, threnax-parvi-flora, or dwarf fan-palm of Jamaica Stourbridge, or fire-clay
23. Coal

Source: Phillips, J. (1844). Memoirs of William Smith, LL.D., Author of the “Map of the Strata of England and Wales.” London: John Murray, Albemarle Street.

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