ake the ribbon sticky--a very little, well spread, is enough. The
same application will also work well on ink pads.
--Contributed by Earl R. Hastings, Corinth, Vt.

** Drinking Trough for Chickens [454]

A quickly made and sanitary drinking trough for chickens is formed
of a piece of ordinary two or three-ply roofing paper. The paper
is laid out as shown, and the edges are cemented with asphaltum
and then tacked to the side of a fence or shed.

[Illustration: Trough of Roofing Paper]

** Ordinary Pen Used as a Fountain Pen [454]

It is a very simple matter to make a good fountain pen out of an
ordinary pen and holder. The device is in the form of an
attachment readily connected to or removed from any ordinary pen
and holder, although the chances are that when once used it will
not be detached until a new pen is needed.

Take the butt end of a quill, A, from a chicken, goose or turkey
feather--the latter preferred as it will hold more ink--and clean
out the membrane in it thoroughly with a wire or hatpin. Then make
a hole in the tapered end of the quill just large enough to pull
through a piece of cotton string. Tie a knot in one end of this
string, B, and pull it through the small end of the quill until
the knot chokes within, then cut off the string so that only 1/4
in. projects. Shave out a small stopper from a bottle cork for the
large end

[Illustration: Fountain Attachment]

of the quill. This completes the ink reservoir.

Place the quill on top of the penholder C, so that its small end
rests against the pen immediately above its eye. Pull the string
through this eye. Securely bind the quill to the pen and holder
with a thread, as shown, first placing under it a wedge-shaped
support of cork or wood, D, hollowed on both sides to fit the
curved surfaces of the quill and holder. The illustration shows
the detail clearly.

To fill the reservoir place the pen upright on its point and dip a
small camel's-hair brush or cloth-bound toothpick into the ink
bottle and "scrape" off the ink it will hold on the inner edge of
the quill. Cork tightly, and the device is ready for use. When not
in use place the holder at an angle with the pen uppermost.
--Contributed by Chelsea C. Fraser, Saginaw, Michigan.

** How to Construct a Small Thermostat [455]
By R. A. McCLURE

It is a well known fact, that there is a change in the dimensions
of a piece of metal, due to a change in its temperature. This
change