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Oratio de re medica cognoscenda et promovenda. Habita apud Societatem Medicam Londinensem ... MDCCLXXVII. Cui accessit, via tuta et jucunda calculum solvendi, in vesica urinaria inhaerentem; ab historia calculosi hominis confirmata / [Nathaniel Hulme]. Public Domain Mark. Source: Wellcome Collection.