glue and small brads at the last lap.
When the cloth is in place paint it with thin varnish or glue to fill up
the meshes and stretch it.

"The reason why box kites made by boys have a tendency to lie down flat on
the ground is that they are not proportioned correctly. The proportions
given here are correct. The painting, decorating, and tinting are matters
of personal taste and skill."

The principle of kite flying is simple. Air is a fluid like water, but on
account of the many changes of temperature, to which it is subjected, it
constantly changes its density and is found to consist of layers or
strata. These layers are not all flat and parallel, but take every variety
of shape as the clouds do. In flying a kite you simply pull it up one of
those layers just as you would pull a sled or wagon up a hill. Always run
facing the wind.

Aeroplanes

Aeroplane season is now a calendar event in the boy's life. Many boys are
engaged in building these fascinating little ships of the air. "The Boy's
Book of Model Aeroplanes," by Francis A. Collins, Century Co. ($1.20 net),
gives complete directions how to build these marvellous new toys. Form a
club and conduct an "Aviation" meet during the season. Spon and
Chamberlain, 123 North Liberty Street, New York City, sell a complete
full-sized set of drawings for building three model aeroplanes. Price, 50
cents.

Parachutes

[Illustration: A Parachute Idea]

The parachute, in its various forms, has always been a favorite with boys.
The idea is to make an umbrella-shaped contraption out of tissue paper and
a stick, so that when it descends from any considerable height it will
open out and float slowly to the ground. This part is easy enough. The
trouble has always been to get it up in the air high enough to repay one
for his efforts in making it. The idea that a common sling shot had
propelling power sufficient for this purpose led to experiments which
proved that the idea was a happy one. The combination of sling shot and
parachute makes a very fascinating outdoor amusement device. Every time
you shoot it into the air you try to make it go higher than last time.

To make the parachute, get a tough stick about two feet long and whittle
it to a shape similar to Fig. 2. The bottom must be heavy enough to fall
first so that the parachute will fall in the right direction to be opened
out. You can weight the end by tying a piece of lead or a spool on it. Cut
your tissue paper to a