Popular Science Monthly 



531 



General Typhoid — an Army's Most 

 Formidable Enemy 



EVEN in the present war, for all our 

 boasted sanitation, disease carries off 

 many a man. General Typhoid has dirt 

 and germs for his allies — and they never 

 fail him. To fight him, an army and its 

 camp must be clean. So, an apparently 

 trifling problem like refuse disposal, is as 

 important as supplying munitions. 



Because an army piles up tons of rubbish 

 and garbage every day, the equivalent of a 

 municipal street cleaning department and 

 board of health is needed. The finest 

 purifier is fire. To the flames, then, all 

 wastes are consigned. 



A United States army officer has recently 

 proposed that as small a group as a bat- 

 talion of men should be supplied with its 

 own incinerator and its own men to look 

 after the burning of its food wastes. The 

 incinerator approved for this purpose is 

 built in the ground in the shape of a flat 

 T-trench. In the oven of the "T," is the 

 fire which heats the rocks placed in the 

 head of the "T." The refuse itself is 

 burned on a steel plate placed directly over 

 the oven. The liquid of the refuse drains 

 off from the plate and trickles through 

 holes in the plate, down over the hot 

 stones beneath. 



GARBAGE) PeRrORATCO 



This incinerator can be built anywhere and 

 disposed of quickly when no longer needed 



The refuse is burned on steel plates over the 

 oven and the liquid drains off through the rocks 



© Int. F.lm 6erv 



The automobile wireless communication out- 

 fit of the New York dty Police Department 



New York Police Department Uses 

 Motor-Truck Wireless 



WIRELESS telegraphy from moving 

 trains was shown to be practical 

 some years ago, but it remained for the 

 Police Department of New York city to 

 build a wireless truck that could communi- 

 cate with headquarters while driving 

 through the streets. A complete radio out- 

 fit is mounted within the body of the 

 automobile, and tw^o masts to supf)ort the 

 aerial wires set up at front and rear. 

 Power to drive the transmitter is taken 

 from the gasoline motor which propels the 

 truck. 



Our photograph illustrates the mobile 

 wireless station, as it appeared in [the 

 recent police parade, passing the Public 

 Library at Fifth avenue and 42nd street. 

 Although the city is run through and 

 through with telegraph wires connecting 

 the various police stations, the wireless 

 installations at Headquarters and the police 

 camps are necessary in case of emergency. 



