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  • A woman dropping her porcelain tea-cup in horror upon discovering the monstrous contents of a magnified drop of Thames water; revealing the impurity of London drinking water. Coloured etching by W. Heath, 1828.
  • A woman dropping her porcelain tea-cup in horror upon discovering the monstrous contents of a magnified drop of Thames water; revealing the impurity of London drinking water. Coloured etching by W. Heath, 1828.
  • A woman dropping her porcelain tea-cup in horror upon discovering the monstrous contents of a magnified drop of Thames water; revealing the impurity of London drinking water. Coloured etching by W. Heath, 1828.
  • Louis (Ludwig) de Wette, physician of Basel. Oil painting by Amalia de Wette-Jersing, 1843.
  • Louis (Ludwig) de Wette, physician of Basel. Oil painting by Amalia de Wette-Jersing, 1843.
  • Louis (Ludwig) de Wette, physician of Basel. Oil painting by Amalia de Wette-Jersing, 1843.
  • Louis (Ludwig) de Wette, physician of Basel. Oil painting by Amalia de Wette-Jersing, 1843.
  • Louis (Ludwig) de Wette, physician of Basel. Oil painting by Amalia de Wette-Jersing, 1843.