A piece of wood cut into the shape of a boat is placed on the ground, and a mast about 12 inches high is fixed into its one and only seat by being firmly pressed into the hole cut through the seat. To the top of the mast is affixed a cocoa-nut shell which has a small hole cut into it about one third of the way up. Prior to the fixing of the mast and the shell, the boat and the shell are filled with water. The bottom of the mast—which is hollowed down its centre—just touches the top of the water in the boat. While filling the articles with water the performer carelessly—very carelessly—spills some on the ground all round the boat. He then blows his "bean." After a short interval he orders water to pour out of the hole in the shell. It does so until he tells it to stop. He again blows his "bean." Again he orders the water to pour out of the shell. Again it pours out until told to stop. And so on until the shell is quite empty and the trick is at an end.

Wonderful isn't it? Marvellous! Mahatmaism!

Now let us have the explanation.

The cocoa-nut shell is full of water. It has only one outlet, the small hole in its side. This is so small that the air cannot get in to let the water out. The only way the air can get in is up the hollowed mast, the bottom of which is immersed in the water in the boat. There is a small hole in the bottom of the boat through which the water in it leaks away. This lowers the water until it has cleared from the bottom of the mast through which a puff of air goes up into the shell, allowing some of the water in the shell to pour out into the water in the boat. Now the water from the shell pours out in greater volume into the boat than the water that is leaking out of the boat. This fills it up again until the bottom of the mast is again immersed, stopping any air going up into the shell and the water stops pouring out of it.

The performer drones away on his musical instrument until he sees that the water level in the boat is just about to clear the bottom of the mast. He then orders the water to come out of the shell. He watches until the newly added water to that in the boat is about to cover the bottom of the mast again, and then gives that wonderful and much used order "Bus" that, possibly, many of my readers may use from time to time after the sun has set. The water stops pouring out of the mast.

Wonderful isn't it? Mahatma. Ghandi ki Jai!