Rensselaer Semi-Weekly Republican, Volume 22, Number 39, Rensselaer, Jasper County, 1 February 1901 — Wonderful Pendulum. [ARTICLE]

Wonderful Pendulum.

. If you fill a wine glass with water and place a thick piece of paper over it so no air can get in, you will find that you caii turn the glass upside down without spilling a drop of water, because the pressure of the ait on the outside will keep the paper from falling off. It is on thjs principle that the present pendulum is to be luade. lake a piece of cardboard larger than the mouth of the glass; pass a cord through a small hole in the center of the card, and fasten It-bV means of a knot on the, under side, then carefully cover the hole with wax, so that no air may get in. Flace your cardboard over the glass full of water, and by making a loop In the end of the cord, you ean hang the glass from a hook in the ceiling without any fear of its falling off. In older to make sure that no air can get into the glass, it Is wise to smear the rim with tallow before laying the cardboard on.