Ball's Naturalists' Dredge

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“The dredges on this pattern, used in Britain for ten years after their first introduction, about the year 1838, were usually small and rather heavy, not more than 12 to 15 inches in length, by 4 or 4.5 inches in width at the mouth. Two scrapers, the length of the dredge-frame, and 1.5 to 2 inches wide, were set at an angle of about 110 degrees to the plane of the dredge’s mouth, so that when the dredge was gently hauled along it took hold of the ground and secured anything loose on its surface.” — Encyclopedia Britannica, 1893


The Encyclopedia Britannica, New Warner Edition (New York, NY: The Werner Company, 1893)


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