Description of a piece of mechanism, on the supposed principle of muscular action, read, and model exhibited, before the Medico-Chirurgical Society, Aberdeen, July 6, 1848 / [William Fraser].

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Description of a piece of mechanism, on the supposed principle of muscular action, read, and model exhibited, before the Medico-Chirurgical Society, Aberdeen, July 6, 1848 / [William Fraser]. Public Domain Mark. Source: Wellcome Collection.