The Coin That Comes Into View This very simple experiment open people’s eyes. Take a bowl that you cannot see through, i.e., it must not be made of glass. Place a coin inside it, on the bottom; but place it up against the side so that it is just out of view. Now, whatever you do, do not move the …

Liquids of Different Densities The following experiment is not showy like some that. It is very important, having far-reaching effects in our daily life. It is quite simple. You take a bottle and pour into it a quantity of oil-any kind will do, as long as it is slightly coloured. Then you add some water and, if you have any, …

Trees Made of Chemicals This experiment is one of the easiest, yet one of the most showy that you can perform. Get a tall gas jar, or if this is not handy, a glass tumbler will do. Place in it a tea spoonful of water glass. This is the syrupy liquid which chemists sell for picking eggs. Then fill up …

An Experiment With a Candle Flame Light a candle, then hold a stiff piece of paper in the flame. Put it in position smartly and see that it is horizontal. It should be held rather low down in the flame. Two or three seconds will be long enough for the experiment for the experiment. At the end of this time, …

Strength and Shape The strength of a substance, say in supporting a weight, depends on many factors. Pliability or its ability to bend is probably the chief factor of all. But there are other considerations which determine the strength of a substance beyond its own qualities. Shape is one of them. Here is a simple experiment to show that shape …

Music of Money When you jungle coins in your pocket what musical note do they give? This sounds rather like a riddle, but the answer is quite straightforward; see if you can guess the note and see if you are right by striking several notes on a piano. Of course, there is a good deal of confusion about the about …

An Experiment With Sound Waves Here is an experiment dealing with sound waves that is extremely illuminating. It is just the thing for a gathering of young friends who are scientifically inclined. Stretch a piece of string tightly across the room and on it pin a silk handkerchief or any other handy article made of silk-the larger the better. When …

A Hutch for Small Pets Most boys keep pets of some kind, and probably you are no exception to the rule. If you have rabbits, doves, guinea-pigs, or such-like creatures, you will know how important it is to house them well and comfortably. Here is a capital hutch which can be made easily. You will agree that it is just …

Making a Dog Kennel Some people think that anything will do for a dog to sleep in. As a matter of fact, a good kennel makes for a healthy dog, and a bad one does the animal harm. Therefore, if your own a canine friend, see that he has comfortable quarters. Below we describe the way to make an attractive …

Keeping Weekly Periodicals Tidy Probably you buy a boy’s paper every week and, though you may not wish to have the copies bound, you may like to keep them for reference. If so, stack up the parts in their proper order and then, thread a piece of tape through the wire stitches, as shown in the larger illustration. The small, …