div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imagea href=https:reader042vdocumentsusreader042viewer2022020522575067a61a28ab0f07ac811ehtml5page1jpg target=_blank img data-url=properties-of-photographic-plates-exposed-to-lighthtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Properties of Photographic Plates Exposed to Light loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader042vdocumentsusreader042viewer2022020522575067a61a28ab0f07ac811ehtml5thumbnails1jpg width=140 height=200 adivp© 1905 Nature Publishing Grouppdiv