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Published online by Cambridge University Press: 06 July 2012
On the Fossil Plants collected during the Sinking of the Shaft of the Hamstead Colliery, Great Barr, near Birmingham.
The area comprised in the county of Stafford embraces five coal fields—
I. The Goldsitch Moss Coal Field, in the extreme north-east of the county.
II. The Cheadle and Churnet Valley Coal Field.
III. The Wetley and Shafferlong Coal Field.
IV. The Coal Field of the Potteries.
V. The South Staffordshire Coal Field.
The three first mentioned are of small extent, and as I know little of their fossil flora they are omitted from this series of papers on the Carboniferous Flora of the Staffordshire Coal Fields.
I, however, devote a separate communication to the fossil plants met with while sinking the shaft of the Hamstead Colliery, Great Barr, as a considerable part of the rocks passed through during this operation is clearly Upper Coal Measures, not Permian, as has been generally stated. The palæontological evidence, therefore, becomes of special importance in determining the age of the red shales occurring in the upper part of this sinking, which have been usually mapped as Permian.
page 317 note * Page 626.
page 321 note * Where remarks and further references will be found.
page 322 note * Where remarks and further references will be found.
page 323 note * Lepidophyllum trinerve, L. and H., vol. ii. pl. clii.; Lepidophyllum binerve, Lebour; Illustrations of Fossil Plants p. 103 Google Scholar, pl. lii., are subject to the same explanation.
page 325 note * Zittel's, Handbuch d. palæont., Band ii. Lief iii. p. 272, 1884 Google Scholar.
page 325 note † Zeiller, , Végét. foss. du terr. houil., p. 135 Google Scholar; Geinitz, , Vers. d. Stinkf. in Sachsen, p. 33 Google Scholar.
page 325 note ‡ See Grand' Eury, Flore Carbon, du Départ, de la Loire, p. 249, 1877; Schenk, in Zittel's, Handbuch d. Palœont., Band ii. Lief iii. p. 243, 1884;Google Scholar Renault, Cours. d. botan. foss., 1881, p. 82.
page 327 note * Zeiller, , Flore foss. d. bassin houiller de Valenciennes, p. 559 Google Scholar, pl. lxxxiv. figs. 1–3.
page 328 note * Renault, , “Sur les cicatrices des Syringodendron,” Comptes Rendus, 24th October 1887 Google Scholar.
page 328 note † The lateral cicatricules in the leaf scars of Lepidodendron, Lepidophloios, and Bothrodendron, probably performed the same function. When the structure of these lateral cicatricules is examined, they never show any trace of vascular tissue, but are filled with lax parenchyma. A good figure of their structure is given by DrFelix, (Untersuchungen iiber den Bau weslfälischer carbon Pflanzen, pl. ii. fig. 3f, König Preusseschen geol. Landesanslalt, 1886 Google Scholar.
page 329 note * Brongt, ., Hist. d. végét. foss., p. 447 Google Scholar, pl. clii. figs. 1, 2; pl. clxiii. fig. 4.
page 329 note † Steinhauer, , Trans. Amer. Phil. Soc., 1818, p. 294 Google Scholar, pl. vii. fig. 3 (Phytolithus notatus).
page 329 note ‡ , Brongt., Hist. d. végét. foss., p. 449 Google Scholar, pl. cliii. fig. 1.
page 329 note § Boulay, ., Le terrain houiller du Nord de la France et ses végétaux fossiles, p. 43, Lille, 1876 Google Scholar.
page 330 note * Vers. d. Böhmischen Kohlenablagerungen, Abeth. ii. p. 46, pl. xx. figs. 4–6.
page 330 note † Göpp. and Berger, De fructibus et seminibus, p. 24, pl. iii. fig. 35.
page 332 note * Mem. Geol. Survey of Scotland, Explan. to sheet 23, Lanarkshire Central District, p. 57.
page 332 note † Trans. Geol. Soc. of Glasgow, vol. ii. p. 144 Google Scholar.
page 334 note * I exclude Stigmaria, which is the root of several Lycopods, and as none of the Lower Carboniferous Lycopods pass into or above the Millstone Grit as far as I know, Stigmaria, being the root of any one of these Lycopods (Lepidodendron, Sigillaria, Lepidophloios) cannot be regarded as a true, individual species, and though these Lower Carboniferous Stigmaria are individually undistinguishable from the Stigmaria of the Upper Carboniferous, they cannot be regarded as specifically the same.
