div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=sir-george-greenhill-frshtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Sir George Greenhill FRS loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentssitereader035viewer2022073020575067c21a28ab0f07ad033ehtml5thumbnails1jpg width=140 height=200 divp© 1927 Nature Publishing Grouppdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imageimg data-url=sir-george-greenhill-frshtmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: Sir George Greenhill FRS loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentssitereader035viewer2022073020575067c21a28ab0f07ad033ehtml5thumbnails2jpg width=140 height=200 divp© 1927 Nature Publishing Grouppdivdiv class=ts-pagebutton class=gotoPage data-page=3Page 3button div class=ts-imageimg data-url=sir-george-greenhill-frshtmlpage=3 data-page=3 class=ts-thumb lazyload alt=Page 3: Sir George Greenhill FRS loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentssitereader035viewer2022073020575067c21a28ab0f07ad033ehtml5thumbnails3jpg width=140 height=200 divp© 1927 Nature Publishing Grouppdiv