div class=trans-pagebuttonPage 1button div class=trans-image a href=https:reader040fdocumentsusreader040viewer2022021402575067be1a28ab0f07acf096html5page1jpg target=_blank amp-img class=trans-thumb alt=Page 1: Mr Otto Hehner src=https:reader040fdocumentsusreader040viewer2022021402575067be1a28ab0f07acf096html5thumbnails1jpg width=142 height=106 layout=responsive amp-imga divp© 1924 Nature Publishing Grouppdivdiv class=trans-pagebuttonPage 2button div class=trans-image a href=https:reader040fdocumentsusreader040viewer2022021402575067be1a28ab0f07acf096html5page2jpg target=_blank amp-img class=trans-thumb alt=Page 2: Mr Otto Hehner src=https:reader040fdocumentsusreader040viewer2022021402575067be1a28ab0f07acf096html5thumbnails2jpg width=142 height=106 layout=responsive amp-imga divp© 1924 Nature Publishing Grouppdiv