div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: The Chemical Age Year Book Diary and Directory 1927 src=https:reader031vdocumentsusreader031viewer2022020522575067c21a28ab0f07ad0307html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divp© 1927 Nature Publishing Grouppdiv