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A Vessel That Will Let Water Out At The Bottom As Soon As The Mouth

is uncorked.

Provide a tin vessel, two or three inches in diameter, and five or six

inches in height, having a mouth about three inches in width; and in

the bottom several small holes, just large enough to admit a small

needle. Plunge it in water with its mouth open, and when full, while

it remains in the water, stop it very closely. You can play a trick

with a person, by desiring him to uncork it; if he places it on his

knee for that purpose, the moment it is uncorked the water will run

through at the bottom, and make him completely wet.