without occupying too much room.

The sketch shows how a neat window conservatory may be made at
small cost that can be fastened on the house just covering a
window, which will provide a fine place for the plants. The frame
(Fig. 2) is made of about 2 by 2-in. material framed together as
shown in Fig. 3. This frame should be made with the three openings
of such a size that a four-paned sash, such as used for a storm
window, will fit nicely in them. If the four vertical pieces that
are shown in Fig. 2 are dressed to the right angle, then it will
be easy to put on the finishing corner boards that hold the sash.

[Illustration: Artistic Window Boxes]

The top, as well as the bottom, is constructed with two small
pieces like the rafters, on which is nailed the sheathing boards
and then the shingles on top and the finishing boards on the
bottom.

** How to Make an Electroscope [103]

An electroscope for detecting electrified bodies may be made out
of a piece of note paper, a cork and a needle. Push the needle
into the cork, and cut the paper in the shape of a small arrow.
Balance the arrow on the needle

[Illustration: Simple Electroscope]

as shown in the sketch, and the instrument will then be complete.
If a piece of paper is then heated over a lamp or stove and rubbed
with a piece of cloth or a small broom, the arrow will turn when
the paper is brought near it.
--Contributed by Wm. W. Grant, Halifax, N. S., Canada.

** Miniature Electric Lighting [104]

Producing electric light by means of small bulbs that give from
one-half to six candle power, and a suitable source of power, is
something that will interest the average American boy.

These circular bulbs range from 1/4 to 2 in. in diameter, and cost
27 cents

[Illustration: FIG. 1]

each complete with base. They are commonly known as miniature
battery bulbs, since a battery is the most popular source of
power. The 1/2-cp. bulbs are usually 2-1/2 volts and take 1/4
ampere of current. It requires about three medium dry cells to
operate it. However, there is now upon the market a battery
consisting of 3 small dry cells connected in series, put up in a
neat case with 2 binding posts, which sells for 25 cents. This is
more economical than dry cells, as it gives about 4 volts and 3
amperes. It will run as large a lamp a 3-1/2 volts, 1 cp., for
some time very satisfactorily. More than one lamp can be run by
connecting the bulbs in parallel, as indicate