. Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments. Geology. Fig. 647. Young individuals of Trinucleus concentricus (T. ornatus, Barr). a. Youngest state. Natural size and magnified; the body rings not at all developed. &. A little older. One thorax joint. c. Still more advanced. Three tho- rax joints. The fourth, fifth, and sixth segments are successively produced, probably each time the animal moulted its Trinucleus concentricus, Eaton. Syn. T. Caractaci, Murch. jST. Ireland; Wales; Shropshire; N. America: Bohemi
. Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments. Geology. Fig. 647. Young individuals of Trinucleus concentricus (T. ornatus, Barr). a. Youngest state. Natural size and magnified; the body rings not at all developed. &. A little older. One thorax joint. c. Still more advanced. Three tho- rax joints. The fourth, fifth, and sixth segments are successively produced, probably each time the animal moulted its Trinucleus concentricus, Eaton. Syn. T. Caractaci, Murch. jST. Ireland; Wales; Shropshire; N. America: Bohemia. number of segments. This change is brought about before the animal has attained a tenth part of its full dimensions, and hence such minute and delicate specimens are rarely met with. Some of. 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. New York, D. Appleton and co.
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectgeology, bookyear1868
