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Excerpt from Monography of the Family Unionidæ, or Naiades of Lamarck, (Fresh Water Bivalve Shells, ) of North America: Illustrated by Figures Drawn on Stone From NatureDr. Kirtland has made some interesting remarks on the sexes of this family, in which he has proved them to be distinct, in the opinion of many concho logists, and the sex can be ascertained by the form of the shell. Almost every Species has two promi nent varieties of form, one...

Republication of Conrad's Fossil Shells of the Tertiary Formations of North America is an unchanged, high-quality reprint of the original edition of 1893. Hansebooks is editor of the literature on different topic areas such as research and science, travel and expeditions, cooking and nutrition, medicine, and other genres. As a publisher we focus on the preservation of historical literature. Many works of historical writers and scientists are a...

Excerpt from Fossils of the Tertiary Formations of the United States: Illustrated by Figures Drawn From NatureSand and clay, either pure or intermixed, often rendered coherent by a ferruginous cement, compose the strata of this formation. Ou St. Mary's river, in Maryland, silicified masses occur imbedding innumerable perfect shells. In some localities comminuted shells are abundant, but in others they are absent, and large fragments or water-w...

Excerpt from Fossils of the Tertiary Formations of the United States: Illustrated by Figures Drawn From NatureSand and clay, either pure or intermixed, often rendered coherent by a ferruginous cement, compose the strata of this formation. Ou St. Mary's river, in Maryland, silicified masses occur imbedding innumerable perfect shells. In some localities comminuted shells are abundant, but in others they are absent, and large fragments or water-w...

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Excerpt from Monography of the Family Unionidæ, or Naiades of Lamarck, (Fresh Water Bivalve Shells, ) of North America: Illustrated by Figures Drawn on Stone From Nature Poulson's translation, p. 20. Say, Amer. Lama. 3w Ferussac, Mag. De zo01. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgott...

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