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[ Lulworth in Dorset, to Flamborough Head: Lulworth is on the southern coast of England, west of the Isle of Wight: Flamborough Head is on the northeastern coast of England and extends into the German Ocean.]
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[ Weald: a name given to an oval-shaped chalk area in England, beginning near the Straits of Dover, and extending into the counties of Kent, Surrey, Hants, and Sussex.]
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[ Lieut. Brooke: Brooke devised an apparatus for deep-sea sounding from which the weight necessary to sink the instrument rapidly, was detached when it reached the bottom. The object was to relieve the strain on the rope caused by rapid soundings. Improved apparatuses have been invented since the time of Brooke.]
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[ Ehrenberg (1795-1876): a German naturalist noted for his studies of Infusoria.]
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[ Bailey of West Point (1811-1857): an American naturalist noted for his researches in microscopy.]