div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=protection-against-gas-attackshtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Protection against Gas Attacks loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentssitereader035viewer2022080320575067d71a28ab0f07ad64a4html5thumbnails1jpg width=140 height=200 divp© 1936 Nature Publishing Grouppdiv