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inches to a foot of tamped earth to prevent fly breeding. If the land is 

 available, shallow furrows are the best, as the excreta decomposes more 

 rapidly when placed in a thin layer in contact with the top soil than it 

 does when buried in a deep pit. The furrows should be from eight to twelve 

 inches in depth. The ground so used may be cultivated after the lapse of 

 a year. 



The excreta may be burned in an incinerator constructed for that 



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PLATE No. 320 

 DETAILS OF THE FORT RILEY-McMUNN INCINERATOR 



purpose, but incineration is the least desirable means of disposing of excreta. 

 A feces incinerator is difficult and expensive to operate, and a disagreeable 

 odor is frequently produced. If it is found desirable to install a feces incin- 

 erator two general types are available which, if properly operated under 

 favorable conditions, will destroy the excreta. For a small camp of from 

 twenty-five to one hundred persons the Fort Riley-McMunn incinerator is 

 probably the most efficient. The details of construction are shown in Plate 

 320. In the operation of this incinerator the feces and urine are separated 

 in so far as is practicable. The feces are poured down the feces chute (A) 

 on to the perforated feces plate (C). The feces plate is made of one-half- 



