div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=document300-150-100-1918-1917-1916-plate-xvgraphs-showing-htmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: 300 150 100 1918 1917 1916 PLATE XV—Graphs showing loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader036fdocumentsusreader036viewer202206250262b00ccfbfbf4b3c131cd795html5thumbnails1jpg width=140 height=200 divdiv