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641 (588b). 1892. Scbellwien, E. Die Fauna des karnischen Fusulinenkalkes. Erster Theil. Palaeonto- Carbon 



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642 (588c). 1892. Schlüter, C. Protospongia rhenana. Zeitschr. d. Deutsch. Geol. Ges. Bd. 44, Devon 



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643. 1893. Abbott, G. "Was the Deposit of Flint and Chalk contemporaneous? Geol. Magaz. Kreide 



New Ser. Dec. 3, Bd. 10, S. 276. 



644. 1893. Hinde, G. J. On Palaeosaccus Dawsoni Hinde, a new Genus and Species of Hexac- Silur 



tinellid Sponge from the Quebec Group (Ordovician) at Little Metis, Quebec, 

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645. 1893. Hinde, G. J. A Monograph of the British Fossil Sponges. Theil III. S. 189—254, Jura 



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646. 1893. Jukes-Browne, A. J. The Relative Age of Flints. Geol. Magaz. New Ser. Dec. 3, Kreide 



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647. 1893. Jukes-Browne, A. J. The Amount of disseminated Silica in Chalk considered in Kreide 



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648. ■ 1893. Ogilvie, M. M. Contributions to the Geology of the Wengen and St. Cassian Trias 



Strata in Southern Tyrol. Quart. Journ. Geol. Soc. London. Bd. 49, S. 24, 33, 

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649. 1893. Rauff, H. üeber angebliche Spongien aus dem Archaicum. Neues Jahrb. für Arch. 



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650. 1893. Winchell, N. H. & C. Schuchert. Sponges, Graptolites and Corals from the Silur 



Lower Silurian of Minnesota. . Final Report of the Minnesota Geological Survey. 

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