Abstract
THE curiously-shaped concretions met with in the Champlain clays of the Connecticut Valley have for many years attracted attention. Indeed, so long ago as 1670 some specimens were sent to the Royal Society of London. A detailed description of them and of their mode of occurrence, illustrated by fourteen beautiful quarto plates, has now been issued by Mr. J. M. Arms Sheldon. Four principal types of concretions are met with; some are discs which call to mind the Kimeridge coal-money; some are cylindrical or club-like, one example (probably a compound one) being a little more than twenty-two inches long; others are botryoidal, and not a few are “queer little images” resembling “fishes, birds, ant-eaters, elephants, dogs, babies' feet,” &c. (Fig. 1).
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W., H. The Concretions of the Connecticut Valley 1 . Nature 63, 566 (1901). https://doi.org/10.1038/063566a0
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DOI: https://doi.org/10.1038/063566a0