A SEPTIC TANK 



451 



conveniences are not more expensive in the country than in the 

 city. Provide a toilet, bath, and kitchen sink. A septic tank 

 should be installed for the use of every country home. If this is 

 not done the sanitary privy described in United States Farmers' 

 Bulletin 463 is the next best plan. It costs no more to provide 

 for health than it does to be sick, to say nothing of the doctor's 



bills and the remorse and suf- 

 fering which follow sickness. 

 A water pressure system is a 

 great convenience and aid to 

 health (Fig. 310). 



A septic tank (Fig. 309) 

 for the average family may 

 be made a few rods from the 

 house and some distance from 

 the well. It is a hole in the 

 ground about five feet deep 

 and five or six feet in diameter. 

 This may be walled with brick 

 or stone laid in cement mor- 

 tar, or the walls and floor 

 may be of concrete. An in- 

 flow pipe should run from 

 the bath room in the house 

 to the tank and be covered 

 with earth the entire distance. 

 This should be deep enough 

 to prevent freezing. The pipe 

 is four inches in diameter 

 and where it enters the tank 



FIG. 310. Hydro-pneumatic pressure sys- - f u olhnw rpnohintr 



tern with tank containing air and water under ^ lltlfe ai1 )UW Addling 



high pressure. The pressure is maintained with f nn f nr mnrp hplnw tVi 



a pump operated by engine, motor, or wind mill. l 1OW tn 



(Flint and Wailing Mfg. Co.) of entrance or may have a 



baffle board in front of it as shown in figure 309. The purpose of 

 this is to prevent agitation of the scum on the top of the water in 

 the tank when the tank is full. 



The outlet pipe which takes the water from the tank should 

 be on a level with the inflow pipe, but inside the tank this 

 should have connected with it a joint of pipe which reaches one or 

 two feet below the surface of the liquid. The purpose is to prevent 

 the drawing off of the scum by drainage. The outlet pipe may 



