. 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. DISTKICT Ol' CAl'E BRETON COUNTY. •107 world the first really satisfactory information* respecting the true nature and mode of growth of Btigmaria; and to these I may refer the reader, more especially to that in volume fifth of the " (Jeological Journal," page >'J55, from which I quote the following account of a fine specimen of iSigillaria altern
. 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. DISTKICT Ol' CAl'E BRETON COUNTY. •107 world the first really satisfactory information* respecting the true nature and mode of growth of Btigmaria; and to these I may refer the reader, more especially to that in volume fifth of the " (Jeological Journal," page >'J55, from which I quote the following account of a fine specimen of iSigillaria alternans with Stigmaria roots, regularly rami- fying, and having attached to them conical tap roots, which penetrated directly downwards into a thin bed of shale overlying the main coal. This seam, like the main seam at the Joggins, has, when it was a bed of soft peat, supported a forest of Sigillarijc and Lepidodendra, many of which still remain erect in the overlying shale, with all their roots and long spreading rootlets attached. " Immediately over the coal there is a bed of hard shale, six inches in depth, in which no fossils are found; this is overlaid by a softer shale abounding in coal-plants; all the upright trees that 1 have ex- amined are rooted in the six-inch shale ; the crown of the base of that which I am now describing is just four inches above the coal; its roots dip gradually downwards until they come in contact with the coal, at about eighteen inches from the centre of the tree, and then spread out over its surface. When this fossil was brought out of the mine the under side was covered up with hard siialc, to which about one inch of coal adhered; in cutting away this layer of coal, I met with the termination of a perpendicular root immediately in contact with the coal, which I carefully developed; proceeding in this manner, my patience was amply rewarded by the discovery of a complete set of conical tap roots. The horizontal roots branch off in a remark
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Keywords: ., boo, bookcentury1800, booksubjectgeology, booksubjectpaleontology
