FAMILY FUN

New Zealand Tablet, Volume XXXVI, Issue 6, 6 February 1908, Page 38

FAMILY FUN

To .Extract a Cork from a Bottle Without Touching it.— Showing a bottle full of water with the cork so tightly driven in that the top of it is flush with the' rim of the neck, you undertake to extract the cork without touching it. of- injuring the bottle. To do so, wrap a towel round the body of the bottle, and strike the bottom, thus protected, against soirething immovable ; the water will act as a solid body and force out the cork.

Musical Bottles. — Take ~two glass bottles, and, by pouring water into them, tune them each to correspond to the sound 1 of a tuning fork. Apply both tuning-forks to the mouth of each bottle, one after. the other, and the sound will be - reciprocated only by that bottle which agrees with its' note, it being the one 'with that column of air capable of vibrating in unison with the fork.

The Pneumatic- Bottle. — Into a four-ounce phial put an ounce of water ; in the cork sealing-wax a glass tube, which shall reach a little below the water inside, and. cork it up air-tight. On plunging the bottle into hot water, or holding it to heat, the water will be driven by the air within up the tube.