Eye-stones are frequently used to extract motes from the eye, sparks from steam-engines, and other extraneous substances. They are to be procured at the druggists'. They cost but two or three cents a piece; and it is well to get several, that in case one fails you may try another. To give an eye-stone activity, lay it for about five minutes in a saucer of vinegar and water; and if it is a good one it will soon begin to move or swim round in the liquid. Then wipe it dry, and let it be introduced beneath the eye-lid, binding a handkerchief closely round the eye. The eye-stone will make the circuit of the eye, and in its progress take up the mote, which it will bring with it, when on the pain ceasing, the handkerchief is removed. Eye-stones are the eyes of lobsters.

When a mote or spark gets into your eye, immediately pull down the lower eye-lash; and, at the same moment with a handkerchief in your hand, blow your nose violently. This will frequently expel the mote without further trouble. A mote will sometimes come out by merely holding your eye wide open in a cup or glass filled to the brim with clear cold water. Or, take a pin, and wrapping its head in the corner of a soft cambric handkerchief, sweep carefully round the eye with it, above and below, inserting it under the lid. This should be done with a firm and steady hand, and will often bring out the mote. Another way is to take a long clean bristle from a brush, tie the ends together with a bit of thread so as to form a loop, and sweep round the eye with it, so that the loop may catch the mote and bring it out.

A particle of iron or steel, has, we know, been extracted from the eye, by holding near it a powerful magnet.

Rail-road sparks, etc, have frequently been removed from the eye by introducing the feather-end of a quill, and sweeping it round beneath the edge of the lid. If done with care and dexterity it will generally succeed.