Nature and Origin of Coco-Nut Pearls


IN the endosperm cavity of the seed of Cocos * nucifem a local calcareous formation is sometimes found to occur, to which the name of “cocos-pearl” has been given, and which must be looked upon as a highly remarkable and very rare occurrence.2 Such a cocos-pearl has usually the form of a pear, or egg; sometimes it is almost spherical and has a smooth surface, as a rule of a milky-white colour. Its chemical composition corresponds somewhat to that of the oyster-pearl, from which it differs in appearance, however, by the lack of the pearly sheen.

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  1. 1

    Reprinted, by kind permission of the author, from the Proceeding of the Koninklijke Akademie van Wetenschappen te Amsterdam, vol. xxvi. Nos. 5 and 6.

  2. 2

    F. W. T. Hunger, "Cocos nucifera," 2nd ed. pp. 243–250, Pl. lxvii. (1920).

  3. 3

    E. Rumphius, "Herbarium Amboinense", vol. i. pp. 21–23 (1741); "D'Amboinsche Rariteitkamer", pp. 291–292 (1741).

  4. 4

    Proceedings of the Boston Soc. of Nat. Hist., vol. vii. p. 229 (1861).

  5. 5

    Ibid., vol. vii. pp. 290–293 (1861).

  6. 6

    NATURE, vol. 36, p. 157 (June 16, 1887).

  7. 7

    W. W. Skeat, "Malay Magic, being an Introduction to the Folk-lore and Popular Religion on the Malay Peninsula," p. 196 (1900).

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HUNGER, F. Nature and Origin of Coco-Nut Pearls. Nature 115, 138–139 (1925).

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