OCR Text |
Show WINKINO HAU USES. Wh.l !! Twitrlitng u( the I J-lll llr.rx to it llau ot tjrlriite. No sitlsfactory determination hat been made ot the reiton we wink. Borne auppoia tint the descent and return re-turn of the lid over the eye aervrs to sweep or wash It off, others that covering cov-ering of the eye gives It a rist from Iho labor of vision, If only for an Inappreciable In-appreciable Instant. This view borrows bor-rows some force from the fact that the record of winking Is considerably uted by experimental phyalologltta to htlp measure the tatlguo which the eye Hitters Hit-ters In another lino ot Int litigation B (lartrn haa attempted to measure Ihe Itngth ot tlmo ociupled by the different phase of a wink He uied a specially nrruiged photographic ap-pirntus ap-pirntus ami affixed a pie o of whits piper pi-per to the edgo o( the eyelid for a mark Ho found that the 11 1 descends quickly and rests a little at the bottom ot Its movement, nftir wM h It rites, but more slowly thin It fell The mean duration ot Ihe downward movement move-ment was from seventy flte to ninety-one ninety-one thoustndth nt n second tha rest with the eye shut lasted varloutly, tho hottest durations being fifteen nun-Iredths nun-Iredths ot n second with one subject and seventeen hundredths with another anoth-er nnd tho thirl phato of the wink, tho rising ot tho lid, tnuk tereatcen hundredths of a second more making tho entire duration ot tin wink abiut forty hundredths or four-tenths of a second Tho InUrruptlon Is not long enough to Interfere with distinct vision vi-sion V Henri says. In L'Aoneo I'sychologlquo that different person wink dirfirmtly-somo often, oilier rarelj , some In groups of ten or to at i time when they rest a while and other rrguhtly once only nt a time. The movement Is modllli 1 by (j,, je. gree of ittentlou l'erlo Is of clots Interest, In-terest, when we wink hardly st all, mny bo followed by a spec ly miking up for loit tlmo by rapid winking when the tintlon Is relieved |