We have enabled automatic

This trick is performed with a wide-mouthed jar which is about 10 in. high. If an earthern jar of this kind is not at hand, use a glass fruit jar and cover it with black cloth or paper, so the contents cannot be seen.

Flower Grows Instantly

Two pieces of wire are bent as shown in Fig. 1 and put together as in Fig. 2.
These wires are put in the jar, about one-third the way down from the top, with the circle centrally located.
The wires can be held in place by carefully bending the ends, or using small wedges of wood.

Cut a wire shorter in length than the height of the jar and tie a rose or several flowers on one end.
Put a cork in the bottom of the jar and stick the opposite end of the wire from where the flowers are tied through the circle of the two wires and into the cork.
The dotted lines in Fig. 3 show the position of the wires and flowers.

To make the flowers grow in an instant, pour water into the jar at one side of the wide mouth.
The cork will float and carry the wire with the flowers attached upward, causing the flowers to grow, apparently, in a few seconds time.
Do not pour in too much water to raise the flowers so far that the wire will be seen.

—Contributed by A. S. Macdonald, Oakland, Calif.

Excerpt from the book:
THE BOY MECHANIC
VOLUME I
700 THINGS FOR BOYS TO DO
WITH 800 ILLUSTRATIONS
1913, BY H. H. WINDSOR CHICAGO
POPULAR MECHANICS CO. PUBLISHERS

Symptoms of brain concussion

Brain concussion treatment

What are the signs of a concussion when observing a person?

Sense organs are specially developed parts of your body.
For example, each of your eyes has a retina for detecting light.
And each of your ears has a cochlea for detecting sounds.

Can you name the “five senses”? 

Try to name them before reading further.
These senses send information to the brain.
There are special parts in the brain that sort out this information.
It is then passed to other parts of the brain, which can compare information from different sense organs. Your brain then signals what you are:

• seeing, 
• hearing, 
• smelling, 
• tasting, and 
• touching. 

These five senses allow you to know what is in your physical environment.

What are the Five Senses?

The hidden senses

Another set of senses, of which you are unaware of most of the time, helps control your inner organs. 
These senses control the timing and movement of food through your body.
They measure the amount of sugar and salt in your blood.
They regulate the amount of oxygen that’s taken in.
Your body temperature and the fullness of your bladder are also under the control of these senses.
Without your awareness, your body is always receiving messages from your hidden senses.
They keep all these basic processes, such as breathing and digestion, running smoothly.

How to Make and Fly a Chinese Kite

The Chinese boy is not satisfied with simply holding the end of a kite string and running up and down the block or field trying to raise a heavy paper kite with a half pound of rags for a tail.
He makes a kite as light as possible without any tail which has the peculiar property of being able to move in every direction.
Sometimes an expert can make one of these kites travel across the wind for several hundred feet; in fact, I have seen boys a full block apart bring their kites together and engage in a combat until one of their kites floated away with a broken string, or was punctured by the swift dives of the other, and sent to earth, a wreck.

The Chinese boy makes his kite as follows:

From a sheet of thin but tough tissue paper about 20 in. square, which he folds and cuts along the dotted line, as shown in Fig. 1, he gets a perfectly square kite having all the properties of a good flyer, light and strong. He shapes two pieces of bamboo, one for the backbone and one for the bow. The backbone is flat, 1/4 by 3/32 in. and 18 in. long. This he smears along one side with common boiled rice. Boiled rice is one of the best adhesives for use on paper that can be obtained and the Chinese have used it for centuries while we are just waking up to the fact that it makes fine photo paste. Having placed the backbone in position, paste two triangular pieces of paper over the ends of the stick to prevent tearing. The bow is now bent, and the lugs extending from the sides of the square paper are bent over the ends of the bow and pasted down. If the rice is quite dry or mealy it can be smeared on and will dry almost immediately, therefore no strings are needed to hold the bow bent while the paste dries.

Parts of a Chinese Kite

After the sticks are in position the kite will appear as shown in Fig. 2. The dotted lines show the lugs bent over the ends of the bow and pasted down. Figure 3 shows how the band is put on and how the kite is balanced. This is the most important part and cannot be explained very well. This must be done by experimenting and it is enough to say that the kite must balance perfectly. The string is fastened by a slip-knot to the band and moved back and forth until the kite flies properly, then it is securely fastened.

A reel is next made. Two ends—the bottoms of two small peach baskets will do—are fastened to a dowel stick or broom handle, if nothing better is at hand. These ends are placed about 14 in. apart and strips nailed between them as shown in Fig. 4, and the centers drawn in and bound with a string. The kite string used is generally a heavy packing thread. This is run through a thin flour or rice paste until it is thoroughly coated, then it is run through a quantity of crushed glass. The glass should be beaten up fine and run through a fine sieve to make it about the same as No.2 emery. The particles should be extremely sharp and full of splinters. These particles adhere to the pasted string and when dry are so sharp that it cannot be handled without scratching- the fingers, therefore the kite is flown entirely from the reel. To wind the string upon the reel, all that is necessary is to lay one end of the reel stick in the bend of the left arm and twirl the other end between the fingers of the right hand.

A Chinese boy will be flying a gaily colored little kite from the roof of a house (if it be in one of the large cities where they have flat-roofed houses) and a second boy will appear on the roof of another house perhaps 200 ft. away. Both have large reels full of string, often several hundred yards of it. The first hundred feet or so is glass-covered string, the balance, common packing thread, or glass-covered string. As soon as the second boy has his kite aloft, he begins maneuvering to drive it across the wind and over to the first kite. First, he pays out a large amount of string, then as the kite wobbles to one side with its nose pointing toward the first kite, he tightens his line and commences a steady quick pull. If properly done his kite crosses over to the other and above it. The string is now payed out until the second kite is hanging over the first ones line. The wind now tends to take the second kite back to its parallel and in so doing makes a turn about the first kites string. If the second kite is close enough, the first tries to spear him by swift dives. The second boy in the meantime is see-sawing his string and presently the first kites string is cut and it drifts away.

It is not considered sport to haul the other fellows kite down as might be done and therefore a very interesting battle is often witnessed when the experts clash their kites. —Contributed by S. C. Bunker, Brooklyn, N. Y.

Excerpt from the book:
THE BOY MECHANIC
VOLUME I
700 THINGS FOR BOYS TO DO
WITH 800 ILLUSTRATIONS
1913, BY H. H. WINDSOR CHICAGO
POPULAR MECHANICS CO. PUBLISHERS