Show am that ali earth revolves on its ail can be proud by a simple experiment fill a medium sized bowl nearly full of water and place it upon the floor of a room that Is not exposed to jarring from the street upon the surface of the water sprinkle a coating of powder then take powdered charcoal and draw a straight black line two inches long upon the coating the line should be north and south after this Is done lay upon the floor a stick so that it will be exactly paral lei with the charcoal line any station ary object la the room will answer well provid it I 1 parallel with the line if the bowl ii left undisturbed for several hours it will be seen that the black mark has turned toward the parallel object and has moved from east to west in a direction opposite to the of the earth on its axis this proves that the earth in revola ing has carried the water with it but the ponder on the surface has been left little behind |