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Robert Schneider, of Berlin, who made his studies in the coal mines near Waldenburg and Altwasser, in Silesia, the salt mines of Stassfurt and the metal mines of Klausthal, in the Upper Harz Mountains. a. Found in the mines of Waldenburg; b. In the brown-coal pits near Westeregeln; c. a. Rhizomorpha canalicularis of Hoffmann, b. As regards the subterraneous flora, Dr.
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