DISPOSAL OF SEWAGE 



511 



Vim 



FIG. 316. A septic tank. (From Practical Up-To-Date Plumbing, Clow.) 



bio woff pipe 



Manhole 



soil die 



Indianmpoli* 



FIG. 317. Plan and section of septic tank suitable for medium sized 

 residences. (Courtesy of Chas. Brossman.) 



