ething about the
subject of electrolysis.

WHAT TO LEARN.--The decomposition of water is not the only thing that we
shall describe pertaining to this subject. We go a step further, and
find that we can decompose metals as well as liquids, and that we can
make a pure metal out of an impure one, as well as make the foulest
water pure. But we shall also, in the course of our experiments, find
that a cheap metal can be coated with a costly one by means of
electricity--that we can electroplate by electrolysis.

USES OF THE ELECTRICAL DEVICES.--While all this is progressing and our
factory is turning out an amazing variety of useful articles, we are led
to inquire into the uses to which we may devote our surplus electricity.
The current may be diverted for boiling water; for welding metals; for
heating sad-irons, as well as for other purposes which are daily
required.

TOOLS.--To do these things tools are necessary, and for the present they
should not be expensive. A small, rigidly built bench is the first
requirement. This may be made, as shown in Fig. 1, of three 2-inch
planks, each 10 inches wide and 6 feet long, mounted on legs 36 inches
in height. In the front part are three drawers for your material, or the
small odds and ends, as well as for such little tools as you may
accumulate. Then you will need a small vise, say, with a 2-inch jaw, and
you will also require a hand reel for winding magnets. This will be
fully described hereafter.

You can also, probably, get a small, cheap anvil, which will be of the
greatest service in your work. It should be mounted close up to the work
bench. Two small hammers, one with an A-shaped peon, and the other with
a round peon, should be selected, and also a plane and a small wood saw
with fine teeth. A bit stock, or a ratchet drill, if you can afford it,
with a variety of small drills; two wood chisels, say of 3/8-inch and
3/4-inch widths; small cold chisels; hack saw, 10-inch blade; small
iron square; pair of dividers; tin shears; wire cutters; 2 pairs of
pliers, one flat and the other round-nosed; 2 awls, centering punch,
wire cutters, and, finally, soldering tools.

[Illustration: _Fig. 2. Top View_ MAGNET-WINDING REEL]

[Illustration: _Fig. 3. Side View_ MAGNET-WINDING REEL]

If a gas stove is not available, a brazing torch is an essential tool.
Numerous small torches are being made, which are cheap and easily
operated. A small soldering iron, with pointed end, should be p