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A Liquid That Shines In The Dark

Take a bit of phosphorus, about the size of a pea; break it into small

parts, which you are to put into a glass half full of very pure water,

and boil it in a small earthen vessel, over a very moderate fire. Have

in readiness a long narrow bottle, with a well-fitted glass stopper,

and immerse it, with its mouth open, into boiling water. On taking it

out, empty the water, and immediately pour in the mixture in a boiling

state; then put in the stopper, and cover it with mastich, to prevent

the entrance of the external air.

This water will shine in the dark for several months, even without

being touched; and, if it be shaken in dry warm weather, brilliant

flashes will be seen to rise through the middle of the water.