. The dawn of life [microform] : being the history of the oldest known fossil remains, and their relations to geological time, and to the development of the animal kingdom. Paleontology; Life; Paléontologie; Vie. CONTEMPORARIES AND SUCCESSORS OF EOZOON. 145 " This fact being established, I procured from the quarries near Passau as many specimens of the lime- stone as the advanced season of the year would per- mit ; and, aided by my diligent and skilful assistants, Messrs. Reber and Schwager, examined them by the methods indicated by Messrs. Dawson and Carpenter. In this way I soon convinc
. The dawn of life [microform] : being the history of the oldest known fossil remains, and their relations to geological time, and to the development of the animal kingdom. Paleontology; Life; Paléontologie; Vie. CONTEMPORARIES AND SUCCESSORS OF EOZOON. 145 " This fact being established, I procured from the quarries near Passau as many specimens of the lime- stone as the advanced season of the year would per- mit ; and, aided by my diligent and skilful assistants, Messrs. Reber and Schwager, examined them by the methods indicated by Messrs. Dawson and Carpenter. In this way I soon convinced myself of the general similarity of our organic remains with those of Canada. Our examinations were made on polished sections and in portions etched with dilute nitric acid, or, better, with warm acetic acid. The most beautiful results were however obtained by etching moderately thin sections, so that the specimens may be examined at will either by reflected or transmitted light. " The specimens in which I first detected Eozoon came from a quarry at Steinhag, near Obernzell, on the Danube, not far from Passau. The crystalline limestone here forms a mass from fifty to seventy feet thick, divided into several beds, included in the gneiss, w^hose general strike in this region is , with a dip of 40°-60° The limestone strata of Steinhag have a dip of 45° The gneiss of this vicinity is chiefly grey, and very silicious, containing dichroite, and of the variety known as dichroite- gneiss; and I conceive it to belong, like the gneiss of Bodenmais and Arber, to that younger division of the primitive gneiss system which I have designated as the Hercynian gneiss formation; which, both to the north, between Tischenreuth and Mahring, and to the south on the north-west of the mountains of Ossa, L. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustration
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectpaleontology, bookyea
