div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: Johannes Rudolf Von Wagner src=https:reader030fdokumentcomreader030viewer20220201195750678c1a28ab0f07ac09dfhtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divp© 1880 Nature Publishing Grouppdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: Johannes Rudolf Von Wagner src=https:reader030fdokumentcomreader030viewer20220201195750678c1a28ab0f07ac09dfhtml5thumbnails2jpg width=142 height=106 layout=responsive amp-img divp© 1880 Nature Publishing Grouppdiv