. On the history of Eozoön Canadense [microform]. Paleontology; Foraminifera; Paléontologie; Foraminifères. 13 iating calcareous matter is uniform and homogeneous. It is also to be observed that small veins of carbonate of lime occasionally traverse the specimens, and in their entire absence of structures other than crystalline, present a striking contrast to the supposed fossils. 2. Though the calcareous laminae have in places a crystalline. 3. Nature-printed section of a specimen of Eozodn Canadense from Petite Nation Seigniory.* [* The replacing mineral in this specimen being serpentine, th
. On the history of Eozoön Canadense [microform]. Paleontology; Foraminifera; Paléontologie; Foraminifères. 13 iating calcareous matter is uniform and homogeneous. It is also to be observed that small veins of carbonate of lime occasionally traverse the specimens, and in their entire absence of structures other than crystalline, present a striking contrast to the supposed fossils. 2. Though the calcareous laminae have in places a crystalline. 3. Nature-printed section of a specimen of Eozodn Canadense from Petite Nation Seigniory.* [* The replacing mineral in this specimen being serpentine, the cal- careous septa were dissolved from the polished surface by the action of an acid, and the iiiiu material replacing the tubuli having been removed by the aid of a brush, a wax mould of the etched surface furnished the electrotype cast from which the above figure is printed. The lights thus represent the calcareous skeleton, and the shaded portion a thick massof3erpentine,which is distinguishable from a contiguous thin stratum of the same mineral, that seems to form the base of the Eozodn. The gradual passage from the wide chambers and thick septa to the nar- rower and thinner ones, and finally to the irregularly aggregated mode of growth, designated by Dr. Carpenter as acervulinv, is well seen. The white patches in the upper portion of the figure do not arise from any imperfection in the electrotype, but represent the irregular growth of this part of the calcareous skeleton.—T. S. H,]. 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 Logan, W. E. (William Edmond), Sir, 1798-1875. Montreal : [s. n. ]
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectpaleontology, bookyea
