Credit: ©The Royal Society
    Image number: RS.15736

    Rat sperm

    5 April 1680
    Antoni van Leeuwenhoek (1632 - 1723, Dutch) , Naturalist
    Object type
    Archive reference number
    Manuscript page number
    height (page): 31mm
    width (page): 88mm
    In a letter by Antoni van Leeuwenhoek to Robert Hooke. A small piece of paper stuck on the page.

    Fig. 1: this is the depiction of one 'little animal' as found in the fluid that came out of a testicle which Van Leeuwenhoek had taken from a living rat.
    Object history
    Printed in A. Leeuwenhoek, ‘Animalcules in a testicle of rat’, Phil. Trans. vol. 17, no. 196 (January 1693), pp. 593-94.

    This letter with the images are also printed as Antoni van Leeuwenhoek, Ontledingen en ontdekkingen, van de Testicul van een Rot, ende Dierkens in deselve; van de Mossel en Oester; Van levende Dierkens in het sap dat uit een Wyngaard-rank droop (Leiden: Cornelis Boutesteyn, 1686), pp. 33-40.

    Antoni van Leeuwenhoek, Anatomia Seu interiora Rerum, Cum Animatarum tum Inanimatarum, Ope & beneficio [sic] exquisitissimorum Microscopiorum Detecta, variisque experimentis demonstrata [etc.] (Leiden: C. Boutesteyn, 1687), pp. 25-29.
    Related fellows
    Antoni van Leeuwenhoek (1632 - 1723, Dutch) , Naturalist
    Robert Hooke (1635 - 1703, British) , Natural philosopher
    Associated place
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          > Netherlands
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