IMITATIVE DIVING BELL.
Nearly fill a basin with water, and put upon its surface a floating lighted wick or taper; over this place a glass goblet, mouth downwards, and push it into the water, which will be kept out, whilst the wick will continue to float and burn under the goblet; thus imitating the living inmate of a diving bell, which is merely a larger goblet, with a man instead of a candle within it.
THE WATER-PROOF SIEVE.
Fill a very fine wire-gauze sieve with water, and it will not run through the interstices, but be retained among them by capillary attraction.
MORE THAN FULL.
Fill a glass to the brim with water, and you may add to it spirit of wine without causing the water to overflow, as the spirit will enter into the pores of the water.
TO CAUSE WINE AND WATER TO CHANGE PLACES.
Fill a small narrow-necked bulb with port wine, or with water and coloured spirit of wine, and put the bulb into a tall, narrow glass jar, which is then to be filled up with cold water: immediately, the coloured fluid will issue from the bulb, and accumulate on the surface of the water in the jar, while colourless water will be seen accumulating at the bottom of the bulb. By close inspection, the descending current of the water may also be observed, and the coloured and the colourless liquids be seen to pass each other in the narrow neck of the bulb without mixing.
The whole of the coloured fluid will shortly have ascended, and the bulb will be entirely filled with clear water.