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.