. Acadian geology [microform] : the geological structure, organic remains and mineral resources of Nova Scotia, New Brunswick and Prince Edward Island. Geology; Paleontology; Geology; Geology; Geologie; Paléontologie; Géologie; Géologie. THL FLOB'> OF THE COAL FORMATION, 467 he lustrous latous cells if the coal- cal tissues. , cbpecirtlly entirely of 'oacites. I associated as compact that in the i been im- 1, forming, odern for- The pro- coals, and leral cliar- i it almost liich in all lart of the ing kinds er hark of ner.—This associated lieinsclvcs, sue figured ?, and very ao spcc
. Acadian geology [microform] : the geological structure, organic remains and mineral resources of Nova Scotia, New Brunswick and Prince Edward Island. Geology; Paleontology; Geology; Geology; Geologie; Paléontologie; Géologie; Géologie. THL FLOB'> OF THE COAL FORMATION, 467 he lustrous latous cells if the coal- cal tissues. , cbpecirtlly entirely of 'oacites. I associated as compact that in the i been im- 1, forming, odern for- The pro- coals, and leral cliar- i it almost liich in all lart of the ing kinds er hark of ner.—This associated lieinsclvcs, sue figured ?, and very ao spcci: . P er !:.!i-k (..i ns to Iiavi' trips afto! iint tlir, ms. It is represent llaria, not y sV close sometimes i lying separately, in other cases grouped in bands half an inch or more in diameter, and embedded in a loose sort of mineral charcoal. When treated with nitric acid, each bundle resolves itself into a few scalari- form vessels surrounded with a sheath of woody fibres, often minutely porous. This structure is precisely that of macerated fern-stipes; but, as already stated, there may have been some other coal-plants Avhosc leaves presented similar bundles. As stated in my former paper " On the Vegetable Structures in Coal," this kind of tissue is especially abundant in the coarse and laminated portions of the coal, which we know on other evidence to have been made up, not of trunks of trees, but of mixed herbaceous matters (Fig. 175, C). c. Scalariform vessels.—These are very abundant in the mineral charcoal, though the coarser kinds have been crushed and broken in such a manner that they usually appear as mere debris. The sca- lariform vessels of Lepidodendron, Lcpidophloios, and Stigmnria are very coarse, and much i-esemble each other. Those of ferns are finer, and sometimes have a reticulated stmcture. Those of Sigillaria are much finer, and often have the aspect of wood-cells with trans- versely elongated pores like those of Cycas. Good example
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Keywords: ., boo, bookcentury1800, booksubjectgeology, booksubjectpaleontology
