div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: Chemistry: Thallium Salts—I src=https:reader036vdocumentssitereader036viewer2022072112575067821a28ab0f07abdb58html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divp© 1869 Nature Publishing Grouppdiv