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SPECULUM

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Originally appearing in Volume V25, Page 632 of the 1911 Encyclopedia Britannica.
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SPECULUM , the Latin word for a See also:

mirror, employed more particularly for a metallic mirror used in a reflecting See also:telescope. In See also:early See also:instruments metallic mirrors, made from an alloy of See also:copper and See also:tin, with the addition of a little See also:arsenic or other metals to increase the whiteness, were customarily employed, but they have now been displaced by the more convenient silveron-See also:glass mirror (see TELESCOPE). Various forms of specula are used in See also:surgery for examining See also:internal See also:organs.

End of Article: SPECULUM

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SPEDDING, JAMES (18o8–1881)

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