The Canadian journal of industry, science and art . Pig. 12&.—Oraptolithws prisHs Fig. 19d.—Lingula fig. iOd.—TriarthniS Becki (Hisinger). o6^«ja.{Hall.) (Green). 204 A POPULAR EXPOSITION OF THE

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Keywords: ., bookcentury1800, bookdecade1850, bookpublishertoron, bookyear1856