image EL_L4_60_Fig
Image number: RS.15816
Credit: ©The Royal Society

Observations of the membranes around fibres into which the muscle is divided


9 January 1720


Unknown, Artist

Object type

Archive reference number

Manuscript page number




height (page): 230mm
width (page): 178mm



Two engraved images; the originals are stuck in Letter Book 15 at LBO/15/298.

The printed images are cut out of plate 2 from the Philosophical Transactions of the Royal Society, vol. 31, no. 367 (1721). The printed images are depicted in reverse compared to the original drawings.

Letter by Antoni van Leeuwenhoek to the Royal Society.

Fig. 1: membranes in fibres of meat (in this case beef).
Fig. 2: the membrane (M) with the branches of meat fibres that grow our of the membrane. The fibres are shown in cross sections.

Object history

Figs 1-2 in A. Leeuwenhock, ‘Observations upon the membranes enclosing the fasciculi of fibres, into which a muscle is divided’, Phil. Trans. vol. 31, no. 367 (1721), pp. 129-34.

Related Fellows

Antoni van Leeuwenhoek (1632-1723, Dutch), Naturalist

Associated place

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