Popular Science Monfhlf/ 



713 



Bacteria Cannot Live in 

 the Light 



IF we cover with black paper 

 one-half of a petri dish (a 

 small circular glass tray with 

 c(Jver) in which bacteria are 

 growing and then place the 

 dish in a light warm place for 

 a few days, the growth of bac- 

 teria in the light part of the 

 dish will be found to be 

 checked, while growth con- 

 tinues in the covered part. It 

 is a matter of common knowl- 

 edge that disease germs thrive 

 where dirt and darkness exist 

 and are killed by any long 

 exposure to sunlight. Accord- 

 ing to George W. Hunter's 

 "Civic Biology" (American 

 Book Company) this shows us 

 the need of light in our homes, 

 especially in our bedrooms. 



stern Nmvpaper Un 



This living emblem of the Marine Corps is formed of 

 its bearers in their parade ground at Paris Island, S. C. 



Underfeed Pipe That Loads from 

 the Bottom 



THE accumulation of moisture laden 

 tobacco in the bottom of the bowl of 

 the pipe is unknown in a style that is fed 

 from the bottom. When more tobacco 

 is to be put into the pipe, the bottom is 

 removed, the new tobacco inserted from 

 below, and the bottom replaced; conse- 

 quently no part remains for days to soak 

 up moisture and juices. The removal of 

 the bottom also facilitates the cleaning of 

 the pipe. 



Whether or not one would appreciate 

 the aroma of tobacco that would permeate 

 his clothes as a result of carrying around 

 the dottle in his pipe between smokes, 

 is another matter. 



Those who usually 

 accumulate a lot of 

 moisture in their 

 pipes when smoking 

 will find this new f an- 

 gled pipe 

 boon. 



f.cEl PUSHED 

 TOIOPOFPIPE 



FRESH TOBACCO 



a great 



DAMPNESS CAOSES TOBACCO 

 n TO BURN AWAY FROM VEKT 



DOUBLE AIR '"^'^fRESH TOBACCO IN THE BOTTOM 

 TKJHT JOINT -^^H ™ f^O^CT IT FROM THE FIR£ 

 y^^ AMD KEEP n CLEAN 



BOnOM REMOVABLE FOR LOAOINQ 



Section and method of load- 

 ing the bottom-filling pipe 



Two Thousand United States Marines 

 Form Their Emblem 



TWO thousand marines, quartered at 

 the training station of the U. S. 

 Marine Corps, at Paris Island, S. C, are 

 shown in the accompanying picture 

 grouped in such a way as to form the 

 design of the service emblem of the Ma- 

 rine Corps, a globe showing the western 

 hemisphere, an American eagle perched on 

 top and an anchor crossing it. It is well 

 to remember the fact, that in the emblem 

 North and South America are visible on 

 the surface of the globe. Otherwise it 

 would be rather difficult correctly to 

 interpret the meaning of the dark 

 spot within the circle 

 representing the 

 globe. 



The novel grouping 

 of masses for pictorial 

 effect is not an easy 

 matter and it must 

 have required a great 

 deal of patience to 

 obtain the strikingly 

 good effect shown by 

 the photograph, which 

 was taken on the pa- 

 rade grounds of the 

 training station. 



