Page:Popular Science Monthly Volume 92.djvu/704

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��Popular Science Monihly

��So-Soya is especially adapted as an all- round Army ration. There is no one thing on which the soldier can march longer and be sustained than on So-Soya, and there is no one thing that may be eaten more continuously with relish and without cloying the appetite than So- Soya. The reason for this is that it is a well-balanced food and one that partakes of the combined properties of vegetable, fruit and meat and is therefore satisfying.

Lest it be thought

that I am trying to advertise So-Soya through the editorial pages of the Popular Science Monthly, I may state here that the product has not been put upon the market, and as yet I have taken no steps to that end. I have been negotiating with the Government in an attempt to get the Government to manu- facture the food and supply it to the Army. For this purpose I have offered the Gov- ernment the free use of my inventions in foods during the war, if they will utilizf- them for any purpos* they see fit.

���knows where the stairway is that leads to the second floor, knows how to get to the room on the second floor where the family jewels may be found.

Softly he feels his way to the stairs. There is the first step. He raises his foot and plants it upon the first step. In a moment the scene is changed as by magic. Stairs and hall are illuminated by a flood of electric light and — "Curse it!" snaps the startled burglar, as he hears the resounding din of a big electric alarm bell, loud enough to awaken everyone in the house, "that means git in a hurry or they'll nab me!" He turns and quickly makes his exit without standing upon the ceremony or order of doing it.

It was his first step on the stairs which had caused all this trouble. He knew where the stairs were but he did not know that the first step was hinged on a spring hinge so as to break an electric circuit w^hile the step was not in use, and closing the circuit by the weight

��The burglar commences warily to climb the stairs but he reckons not on the stair alarm

��Just as he touches the fatal step the little burglar-alarm, which is shown here in detail, operates

��The Burglar Makes a False Step

THE night is dark and cold. Some- one is stealthily mov- ing in the shadow of a residence. When the policeman, patrol- ling the beat disap- pears around the corner, a man, with his face muffled, slinks up to a house. "What a snap!" he murmurs.

Drawing a few skeleton keys from his pocket, he begins operations upon the inner door. The lock, a plain one, yields in a few moments. He enters the pleas- antly heated hall. He knows his ground,

��5prir\g strap Mnges

��hinged panel

���Contact point

Open circuit for electric bell )'

��=Vf

��Contact plate

�� ��-Sattenj

��of a person pressing the three contact points of the movable part of the step against the corresponding contact points of the base underneath. The electric current thus put into action automatically switched on the lights and sounded the alarm gong, informing the whole house- hold of his undesired presence.

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