. Relics of primeval life, beginning of life in the dawn of geological time. Fig. 33.— Weathered surface of sections of two funnels or tubes with limiting walls, Cote St. Pierre. exposures, it was found that specimens of moderatesize had been weathered out, and could, eithernaturally or by treatment with acid, be entirelyseparated from the matrix. Such specimens some-times showed, either on the surfaces or on the sides THE DAWN OF LIFE 153 of funnels and tubes penetrating the mass (Figs. 33,34), a confluence of the laminae, constituting a porouscortex or limiting structure. Spe
. Relics of primeval life, beginning of life in the dawn of geological time. Fig. 33.— Weathered surface of sections of two funnels or tubes with limiting walls, Cote St. Pierre. exposures, it was found that specimens of moderatesize had been weathered out, and could, eithernaturally or by treatment with acid, be entirelyseparated from the matrix. Such specimens some-times showed, either on the surfaces or on the sides THE DAWN OF LIFE 153 of funnels and tubes penetrating the mass (Figs. 33,34), a confluence of the laminae, constituting a porouscortex or limiting structure. Specimens of this kindwere figured in 1888, and I was enabled to add to the. Fig. 34.—Section of the Base of a specimen of Eozoon. This specimen shows an oscuHform, cylindrical funnel, cut in such a manneras to show its reticulated ivall and the descent of the laminae toward it. Two-thirdsof natural size. From a photo,;^raph. Col. Carpenter, also in Redpath Museum. [This illustration (from Prof. Prestwichs Geology, vol. ii. p. 21) has beencourteously lent by the Clarendon Press, Oxford.] characters of the species that the original and properform was broadly turbinate with a depression orcavity above, and occasionally with oscula or pitspenetrating the mass. The great flattened massesthus seemed to represent confluent or overgrown 154 RELICS OF PRIMEVAL LIFE individuals, often contorted by the folding of theenclosing beds. There are also in well-preserved specimens cer-tain constant properties of the calcite and ser-pentine layers. The former are continuous, andconnected at intervals, so that if the silicious fillingof the chambers could be removed, the calca
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Keywords: ., bookauthordawsonjohnwilliamsir1, bookcentury1800, bookdecade1890