. Elements of geology. Geology. a. Lycopodium densum; banks of R. Thames, New Zealand. b. branch, natural size. c. part of same, magnified. and even in tropical countries only attain, as in the case of Equisetum giganteum, discovered by Humboldt and Bonpland, in South America, a height of about five feet, the stem being an inch in diameter. The Calamites, however, of the Coal differed from these, principally in being furnished with a thin bark, which is represented in the stem of C. SucJcoivii, (Fig. 261.) in which it will be seen that the striped external pattern does not Fig. 260. Fig.
. Elements of geology. Geology. a. Lycopodium densum; banks of R. Thames, New Zealand. b. branch, natural size. c. part of same, magnified. and even in tropical countries only attain, as in the case of Equisetum giganteum, discovered by Humboldt and Bonpland, in South America, a height of about five feet, the stem being an inch in diameter. The Calamites, however, of the Coal differed from these, principally in being furnished with a thin bark, which is represented in the stem of C. SucJcoivii, (Fig. 261.) in which it will be seen that the striped external pattern does not Fig. 260. Fig. Calamites carimformis, Schlot. Calamites Suckowii, Brong. (Foss. Flo. 79.) Common in natural size. Common in English coal. , coal throughout Europe. agree with that left on the stone where the bark is stripped off, so that if the two impressions were seen separately, they might be mistaken for two distinct species. Coniferce.—The structure of the wood of certain coal-plants displays so great an analogy to that of certain pines of the genus Araucaria, as to lead to the opinion that some species of firs existed at this period. (See above, p. 56.). 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 Lyell, Charles, Sir, 1797-1875; Gibbes, Lewis Reeve, 1810-1894, former owner. DSI; Merrill, George P. (George Perkins), 1854-1929, former owner. DSI. Philadelphia : James Kay, Jun. and Brother ; Pittsburgh : C. H. Kay & Co.
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Keywords: ., bookauthorlyellcharlessir17, bookcentury1800, booksubjectgeology
