| Show A paper fish that will swim cut out of a piece piece of ordinary paper a i fish of natural size in tho the center of t the fish cut a holo hole communicating with the tall by a narrow canal fill in abl oblong on g pan with water and place he the fie fish h 0 on nt the he surface eo so that the under part will be thoroughly wet while hile the upper part will be perfectly dry I 1 propose to your audience to make his this fish move without touching or lowing blowing upon it all you have to do Is s to let a drop of oil fall lightly into the he C opening peni nR this oil will spread it self iel over the surface of the water but his this can only be possible through the by the effect ol 01 reaction the ish fish wil wit 1 I be pushed inverse inversely I 1 to the direction li taken by the oil that is to lay say forward this motion will last ion ong enough to allow the spectator to lee see with astonishment the movement 0 a single piece of paper on t the he eurt surf face aca of the water without knowing how low the effect has been obtained un less aea an explanation is given him |
