OCR Text |
Show Tho II.ollnc rit. A very deceptlvo optical illusion Is accomplished by the use of a largo china plate. Sitting on ono sldo of the table you rest tho plate on your kneo, so that about one-third of It shows abovo the table. Take a knife In both hands and rest It on tho plate. If you now lower and ralso the knees alternately, quickly and evenly, It gives a motion to tbe plate, as If It was actually revolving round. In fact, It Is so Illusive that to the operator himself him-self It has that aamo appearance. |