div class=ts-pagebuttonPage 1button div class=ts-image a href=https:reader040vdocumentsinreader040viewer2022020722575067c01a28ab0f07acf99ehtml5page1jpg target=_blank amp-img class=ts-thumb alt=Page 1: Dr R A Joyner src=https:reader040vdocumentsinreader040viewer2022020722575067c01a28ab0f07acf99ehtml5thumbnails1jpg width=142 height=106 layout=responsive amp-imga divp© 1925 Nature Publishing Grouppdiv