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SEPIA (Gr. a iria, cuttlefish)

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Originally appearing in Volume V24, Page 652 of the 1911 Encyclopedia Britannica.
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SEPIA (Gr. a iria, cuttlefish)  , a deep See also:brown pigment obtained from the See also:ink-sacs of various See also:species of cuttlefish (q.v.) . To obtain See also:sepia the ink-See also:sac, immediately on the See also:capture of the See also:animal, is extracted from the See also:body and speedily dried to prevent putrefaction . The contents are subsequently powdered, dissolved in See also:caustic See also:alkali, and precipitated from the See also:solution by neutralizing with See also:acid . The precipitate after washing with See also:water is ready to make up into any See also:form required for use . Sepia-See also:bone or cuttle-bone consists of the See also:internal " See also:shell " or See also:skeleton of Sepia officinalis and other allied species . It is an oblong See also:convex structure from 4 to to in. in length and t to 3 in. in greatest width, consisting internally of a highly porous cellular See also:mass of See also:calcium carbonate with some animal matters covered by a hard thin glassy layer . It is used principally as a polishing material and for tooth See also:powder, and also as a moulding material for See also:fine castings in See also:precious metals .

End of Article: SEPIA (Gr. a iria, cuttlefish)
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