OUR SUMMER VACATION 



199 



woman should know the source of his summer table water 

 and the method of sewage disposal. If the conditions are 

 unsanitary, they cannot be reme- 

 died at once, but another resort 

 can be found and personal danger 

 can be avoided. Public sentiment 

 and the loss of trade will go far 

 in furthering an effort toward 

 better sanitation. 



In the driven well, water can- 

 not reach the spout unless it has 

 first filtered through the soil to the 

 depth of the driven pipe ; after 

 such a journey it is fairly safe, 

 unless very large quantities of 

 sewage are present; generally 

 speaking, such a depth of soil is 

 able to filter satisfactorily the 

 drainage of the limited number 

 of people which a driven well 

 suffices to supply. 



Abundant water is rarely 

 reached at less than 75 feet, and 

 it would usually be impossible to 

 drive a pipe to such a depth. 

 When a large quantity of water 

 is desired, strong machines drill 

 into the ground and excavate an 

 opening into which a wide pipe 



, T T FIG. 141. A deep well with the 



can be lowered. I recently spent piston in tl water . 



a summer in the Pocono foun- 

 tains and saw such a well completed. The machine drilled 

 to a depth of 250 feet before much water was reached and 



