394 



ELEMENTS OF AGRICULTURE 



the bacteria that are essential in destroying the sewage. 

 The outlet pipe will need to be four to eight feet long for 

 each person, depending on the soil. It is made of tile drain- 



FIG. 199. The city house in the country. A tall house standing alone on a 

 hill, conditions that demand a low house. Trees planted at the sides would help 

 the appearance. Contrast with Fig. 195. 



pipe laid with a fall of one inch in sixteen feet. This pre- 

 vents the water running to the lower end so rapidly as to 

 cause a wet place there. The water seeps out the entire 

 length of the drain. 



If the farm is tile-drained, the septic tank may be 

 connected with the drainage system. The entire cost 

 of such modern improvements, aside from the well or 



