Isaac Swainson promoting his 'Velnos syrup', facing an onslaught of rival practitioners advocating mercury. Coloured etching by T. Rowlandson, 1789.

  • Rowlandson, Thomas, 1756-1827.
Date:
29 November 1789
Reference:
10779i

Licence: Public Domain Mark

Credit: Isaac Swainson promoting his 'Velnos syrup', facing an onslaught of rival practitioners advocating mercury. Coloured etching by T. Rowlandson, 1789. Wellcome Collection. Source: Wellcome Collection.

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