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Credit
Ueber die Bewegung der Säfte in den Pflanzen : ein Schreiben an die Königliche Academie der Wissenschaften zu Paris / deutsch bearbeitet und mit Anmerkungen versehen von F.J.F. Meyen. Public Domain Mark. Source: Wellcome Collection.
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This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.