Credit: ©The Royal Society
    Image number: RS.15739

    Glass tube and blood vessles of a red cockcroach

    Date
    12 November 1680
    Creator
    Unknown, Artist
    Object type
    Archive reference number
    Manuscript page number
    p19
    Material
    Dimensions
    height (page): 395mm
    width (page): 245mm
    Subject
    Description
    Three images in a letter from Antoni van Leeuwenhoek to Robert Hooke.

    Fig. 1: glass tube.
    Fig. 2: veins/arteries of a cockroach from the East Indies. Van Leeuwenhoek observes that the veins and arteries are not two distinct systems, but rather branch out from the same arteries.
    Fig. 7: arteries in a fly. In his observations the arteries are a 1000 times thinner than a hair from his beard.
    Object history
    Printed in Philosophical Collections, 3 (1681), pp. 51-58.

    Antoni van Leeuwenhoek, Ondervindingen en Beschouwingen der onsigtbare geschapenen waarheden, vervat in verscheydenen Brieven (Leiden: Daniel van Gaesbeeck, 1684), pp. 1-32.

    Also published in the Latin edition of Van Leeuwenhoek's letters: Antoni van Leeuwenhoek, Arcana Naturae Detecta (Delft: Krooneveld, 1695).
    Related fellows
    Antoni van Leeuwenhoek (1632 - 1723, Dutch) , Naturalist
    Robert Hooke (1635 - 1703, British) , Natural philosopher
    Associated place
    <The World>
       > Europe
          > Netherlands
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