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File:Head of Hipparchus (cropped).jpg

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    English: This engraving was made based on a carved amethyst depicting Hipparchus (CARC:1839-881) included among the Poniatowski gems, a collection of early 19th century forgeries passed off as antique engraved gems.
    It is described in Poniatowski's 1833 catalog (VIII.2.60, vol. 1, p. 105, vol. 2, p. 52):
    "... Dans le champ de cette pierre on voit une étoile et en beaux caractères le nom du sujet. Améthyste."
    [In the field of this stone we see a star and in beautiful characters the name of the subject. Amethyst.]
    The gem was sold at auction in 1839 (Christie's: A catalogue of the very celebrated collection of antique gems of the Prince Poniatowski ..., No. 881) and its whereabouts since are unknown, but in 1842 British naval officer William Henry Smyth sent a letter to the (American) National Institute for the Promotion of Science:
    Bulletin of the Proceedings of the National Institute for the Promotion of Science, 3 (1842), 1845, Stated Meeting, September 12, 1842, Letters and Communications, p. 258, "From W. H. Smyth, Chelsea, England, August 20, 1842: Acknowledging bulletin No. 2, and forwarding his privately printed catalogue of Roman brass medals; also, specimens of impressions of the head of Hipparchus, from the Poniatowski-gem, intended as a vignette illustration of his work."
    The engraving here was first used for the title page of Smyth's 1844 book:
    Smyth, William Henry (1844), A Cycle of Celestial Objects, vol. 2, John W. Parker, title page
    In 1965 this was the source for a Greek stamp celebrating Hipparchus. See:
    Wilson, Robin (1989). "Stamp corner". The Mathematical Intelligencer. 11 (1): 72. doi:10.1007/bf03023779
    Date
    Source George F. Chambers, A Handbook of Descriptive and Practical Astronomy, Vol. 3 (4th ed.) https://archive.org/details/handbookofdescri0003geor/page/n10/mode/1up
    Author William Henry Smyth
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    Public domain

    This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer.

    This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1931.

    This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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    Date/TimeThumbnailDimensionsUserComment
    current09:57, 19 July 2023Thumbnail for version as of 09:57, 19 July 2023434 × 540 (44 KB)Jacobolusbetter scan
    08:27, 19 July 2023Thumbnail for version as of 08:27, 19 July 2023581 × 736 (62 KB)FicaiaFile:Head of Hipparchus.jpg cropped 76 % horizontally, 82 % vertically using CropTool with lossless mode.

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