688 



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. 



