A pictorial atlas of fossil remains, consisting of coloured illustrations selected from Parkinson's "Organic remains of a former world," and Artis's "Antediluvian phytology." . gioove visible on the external surface indicates the inner axis, which by compression hasbeen pressed from its natural central position; see fig. 2, a, b, c, d : figs. 6, 7, 8, 9, show in thecorresponding transverse sections the position of this body. The mode of attachment of the rootlets to the tubercle on the main root, is representedfig. 5. Fig. 3, exhibits the characters of the two kinds of variolse, or tuberc
A pictorial atlas of fossil remains, consisting of coloured illustrations selected from Parkinson's "Organic remains of a former world," and Artis's "Antediluvian phytology." . gioove visible on the external surface indicates the inner axis, which by compression hasbeen pressed from its natural central position; see fig. 2, a, b, c, d : figs. 6, 7, 8, 9, show in thecorresponding transverse sections the position of this body. The mode of attachment of the rootlets to the tubercle on the main root, is representedfig. 5. Fig. 3, exhibits the characters of the two kinds of variolse, or tubercles. When Dr. Bucklands Bridgewater Essay was published, the true nature of these fossilremains was unknown. It was supposed by Messrs. Lindley and Hutton, that the original wasan aquatic plant, having a short dome-shaped trunk, from which radiated numerous longhorizontal branches; and that when the plant was perfect, and the branches floating on thewater, its appearance resembled that of an Asterias. This dome-shaped trunk is now knownto be merely the base of the stem of the tree. See Supplementary Notes, art. Stigmaria. Dr. Bucklands Bridgewater Essay, vol. ii. p. f?;;.^:,0</ ^/eA//::/^ FOSSIL IXORA. 63 PLATE XXIII. Great Stigmaria. {Stigmaria ficoides, of major, of Artis.) Thk fossil here represented Is a fragment of a Stigmaria having larger tubercles than thespecies previously described. The tubercles are oval at the base, somewhat compressed, longi-tudinally farrowed at the top, with a pit in the furrow. This root is from five to six inches in diameter; the axis is seen near the compressed side,in the transverse section at the bottom of the figure. From a sandstone quarry, near Rotherham, Yorkshire. The specimen figured by Mr. Parkinson, ante, Plate III. fig. 1, appears to be the fragmentof a Stigmaria of this kind in ironstone: the internal axis is seen in the transverse sectionpressed from its natural position to near the outer surface.
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectpaleontology, bookyea
