div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=-words-written-on-paper-using-aqueous-ammonium-thiocyanate-nh4scn-are-invisiblehtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Words written on paper using aqueous ammonium thiocyanate NH4SCNò are invisible When the paper is brushed with aqueous iron Ill chloride the words appear blood-red in colou loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentsusreader034viewer20220421115e8bbc99c71d654d9a27fbaahtml5thumbnails1jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imageimg data-url=-words-written-on-paper-using-aqueous-ammonium-thiocyanate-nh4scn-are-invisiblehtmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: Words written on paper using aqueous ammonium thiocyanate NH4SCNò are invisible When the paper is brushed with aqueous iron Ill chloride the words appear blood-red in colou loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentsusreader034viewer20220421115e8bbc99c71d654d9a27fbaahtml5thumbnails2jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=3Page 3button div class=ts-imageimg data-url=-words-written-on-paper-using-aqueous-ammonium-thiocyanate-nh4scn-are-invisiblehtmlpage=3 data-page=3 class=ts-thumb lazyload alt=Page 3: Words written on paper using aqueous ammonium thiocyanate NH4SCNò are invisible When the paper is brushed with aqueous iron Ill chloride the words appear blood-red in colou loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentsusreader034viewer20220421115e8bbc99c71d654d9a27fbaahtml5thumbnails3jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=4Page 4button div class=ts-imageimg data-url=-words-written-on-paper-using-aqueous-ammonium-thiocyanate-nh4scn-are-invisiblehtmlpage=4 data-page=4 class=ts-thumb lazyload alt=Page 4: Words written on paper using aqueous ammonium thiocyanate NH4SCNò are invisible When the paper is brushed with aqueous iron Ill chloride the words appear blood-red in colou loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentsusreader034viewer20220421115e8bbc99c71d654d9a27fbaahtml5thumbnails4jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=5Page 5button div class=ts-imageimg data-url=-words-written-on-paper-using-aqueous-ammonium-thiocyanate-nh4scn-are-invisiblehtmlpage=5 data-page=5 class=ts-thumb lazyload alt=Page 5: Words written on paper using aqueous ammonium thiocyanate NH4SCNò are invisible When the paper is brushed with aqueous iron Ill chloride the words appear blood-red in colou loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentsusreader034viewer20220421115e8bbc99c71d654d9a27fbaahtml5thumbnails5jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=6Page 6button div class=ts-imageimg data-url=-words-written-on-paper-using-aqueous-ammonium-thiocyanate-nh4scn-are-invisiblehtmlpage=6 data-page=6 class=ts-thumb lazyload alt=Page 6: Words written on paper using aqueous ammonium thiocyanate NH4SCNò are invisible When the paper is brushed with aqueous iron Ill chloride the words appear blood-red in colou loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentsusreader034viewer20220421115e8bbc99c71d654d9a27fbaahtml5thumbnails6jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=7Page 7button div class=ts-imageimg data-url=-words-written-on-paper-using-aqueous-ammonium-thiocyanate-nh4scn-are-invisiblehtmlpage=7 data-page=7 class=ts-thumb lazyload alt=Page 7: Words written on paper using aqueous ammonium thiocyanate NH4SCNò are invisible When the paper is brushed with aqueous iron Ill chloride the words appear blood-red in colou loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentsusreader034viewer20220421115e8bbc99c71d654d9a27fbaahtml5thumbnails7jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=8Page 8button div class=ts-imageimg data-url=-words-written-on-paper-using-aqueous-ammonium-thiocyanate-nh4scn-are-invisiblehtmlpage=8 data-page=8 class=ts-thumb lazyload alt=Page 8: Words written on paper using aqueous ammonium thiocyanate NH4SCNò are invisible When the paper is brushed with aqueous iron Ill chloride the words appear blood-red in colou loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentsusreader034viewer20220421115e8bbc99c71d654d9a27fbaahtml5thumbnails8jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=9Page 9button div class=ts-imageimg data-url=-words-written-on-paper-using-aqueous-ammonium-thiocyanate-nh4scn-are-invisiblehtmlpage=9 data-page=9 class=ts-thumb lazyload alt=Page 9: Words written on paper using aqueous ammonium thiocyanate NH4SCNò are invisible When the paper is brushed with aqueous iron Ill chloride the words appear blood-red in colou loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentsusreader034viewer20220421115e8bbc99c71d654d9a27fbaahtml5thumbnails9jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=10Page 10button div class=ts-imageimg data-url=-words-written-on-paper-using-aqueous-ammonium-thiocyanate-nh4scn-are-invisiblehtmlpage=10 data-page=10 class=ts-thumb lazyload alt=Page 10: Words written on paper using aqueous ammonium thiocyanate NH4SCNò are invisible When the paper is brushed with aqueous iron Ill chloride the words appear blood-red in colou loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentsusreader034viewer20220421115e8bbc99c71d654d9a27fbaahtml5thumbnails10jpg width=140 height=200 divdiv
