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Show A ItltRft aeel la the I're. It U n-markable that, although tho optlo item- li of all rta of tho ejo tlio moat M-naltlvo to light, yet tlmiM nn obj-ct fall on It aa we look around ua n hd miiiio object mint alauj e Ik- thrown on It-It la InilalMn to ua( and In our IMJt.Mlil.ni therolt In reality a gaft though In ordinary tight the itirmund-tug itirmund-tug edge uf thtt gap draw up together, nml to llll It. Hut by cloelng one e)e, by pruLtlcu ouo nuy aetuall) force tho object which la rrnV-cted on In the uptlo nero lo dltappear completely from the Held of tlalun, Ib-niatelil telle ua that even the tun Itatlf can In made tn dlaippear If It fall elaetly on the blln I tjiut where tho optlo neno intira the c)o. Thla may account (or tho firt that aoiue iMople can cloae one eye nn I ttam the lumuter tun without wlaelng. C'hambcrt' Journal. |