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Show f ouTsrnippiNCi thevWind. An Illuatrtilluii of Unit i Vnclit Slny Ac. rniuiillali ThU lttit. I IJvcry ynclilamnn Un.nva thnt ii ahlp ' can Mill fantcr tltuu tho wind: that la to say, If tho wind U blowings ten kiiotti un hour, ii ship may Ikj making twelvn or llfteen Ituot'. nn hour. Now. , it la obvious that if tlio ship In nailing straight before tlm wind it cannot, nt tho utmost, travel frv'tcr thnn tin wind Itself hi Mowing-as a matter nf fact. It will travel mnoli more nlowly If, on tho other hand. Hie ship is sailing sail-ing nt mi nnglo with tho wind, it aeoma at drat sight Hint the wind iiiu t act with loan effect than lwforu, but ns a mutter of fnct tho ship not only sails more (uiekly thnn before, but more tpilckly than the wind Itself It-self Is blowing. Let us consider the difficulty in the light or tlio following I experiment: 1'laee n ball nt one sldo j of the billiard tnble, nml with tho cue, not he! I In the ordinary maimer, but, lengtliwiHc from olid to end of the t- bio, shove the ball nenma the cloth ,' Tho one hero represents the wind, ami the ball tho shipsnlllngdirertly lie fore ' It; the Imll nt course trnvuln nt the snme rnto an the cue. Now, supnoao a groove In which the bull may roll be cutdlugonall,' neto,. the table from! one corner jmeknt to Hie other. If the ball bo now placid nl ..im end of the groove nnd tlio i m- h-ld borizonlall' j piirulll 1 Willi t Iiu lull" ' nl. and milled forwai Inert ' the width. ! the t.ibl. nibef'i.', l'i.' lull will tiftiel nhuif tlio gin. ' I ind liking the i in-) din-I din-I otinlly roHn thu Uibie in thu bftutn . time as tho cuo takes to movo across tlm width of the table. This is tho ' cio of tho ihlp falling nt nn nnrle with tl..- direction of the wind 'I he I groove is eon ulernbly lonj-er tli..'i 1 'ip Width. I tin- table more 1'inii d..,ille RS Ion,' in f. t The l.-ill. tlui. fun-travel fun-travel iih' tt tiin.-. . s. . i ,1, impel., ii, i i .i ' ii i .in t . .n I double thodiMnncu in tho i.tyne tin:". It la In prcfisely tho aame iniiinur thnt n tacking ship is ouablcd to suil, faster thnn the wind ,-V- v |