div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=unemployed-laboratory-assistants-579767d500eb2htmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Unemployed Laboratory Assistants loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentsusreader035viewer2022080107575067aa1a28ab0f07ac97d8html5thumbnails1jpg width=140 height=200 divp© 1910 Nature Publishing Grouppdiv