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Leonardo da Vinci (Vinci 1452-Amboise 1519)

Recto: The foetus in the womb. Verso: Notes on reproduction, with sketches of a foetus in utero, etc. c.1511

Recto: Pen and ink over red chalk. Verso: Pen and ink, with some offset red chalk | 30.4 x 22.0 cm (sheet of paper) | RCIN 919102

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Recto: Large drawing of an embryo within a human uterus with a cow's placenta; smaller sketch of the same; notes on the subject; illustrative drawings in detail of the placenta & uterus; diagram demonstrating binocular vision; a note on relief in painting & on mechanics. Verso: A note on light & shade; numerous notes on reproduction; L side of a foetus with a cord; 3 drawings of foetal liver, stomach & umbilical vein; sketches of chick embryo & membranes & front