Drop five or six of these
little crystals into a large glass of limpid water. They will dissolve;
but instead of giving a _green_ solution, the product is an exquisite
crimson-rose color, the color seeming to trickle from the surface of the
water downward. When the solution has proceeded for a short time, stir
the water with a glass rod, and the uncolored portion of it will become
carmine.
SOME ELECTRICAL EXPERIMENTS.
Take a piece of common brown paper, about a foot in length, and half as
wide. Hold it before the fire till it becomes quite hot. Then draw it
briskly under your left arm several times, so as to rub it on both
surfaces against the woolen cloth of your coat. It will now have become
so powerfully electrified, that if placed against the papered wall of
the parlor, it will hold on for some time, supported, as it were, by
nothing.
While the piece of brown paper is thus so strangely clinging to the
wall, place a small, light, and fleecy feather against it, and this, in
turn, will cling to the paper.
Now, again, make your piece of brown paper hot by the fire, and draw it,
as before, several times under the arm. Previously to this, attach a
string to one corner, so that it may be held up in the air. Several
feathers, of a fleecy kind, may now be placed against each side of the
paper, and they will cling to it for several minutes.
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