div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=prof-h-s-jenningshtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Prof H S Jennings loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentsmxreader031viewer2022020223575067ef1a28ab0f07add4d3html5thumbnails1jpg width=140 height=200 divp© 1947 Nature Publishing Grouppdiv