div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: The Pigments and Mediums of the Old Masters src=https:reader035fdocumentsinreader035viewer2022072113575067b11a28ab0f07acb3b1html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divp© 1914 Nature Publishing Grouppdiv