WELLS, PUMPS, CISTERNS, FILTERS. 109 



second cylinder follows the first. This makes an addi- 

 tional depth of four feet, which is generally sufficient. 

 If not, the process can be continued by providing ad- 

 ditional cylinders, and splicing the auger -stem until a 

 permanent water-vein is found. 



DIGGING A WELL. 



A hole is dug down and the earth thrown out as far 

 as could be done, and then a ladder is rigged up on 

 three stakes as shown in figure 136. A pulley is at- 

 tached to one round, a cord thrown over it and fastened 



Fig. 136. DIGGING A DAKOTA WELL. 



to a pail, the other end of the rope reaching in to the well. 

 The pail is filled and drawn to the surface, where it 

 is swung to one side, emptied and returned for an- 

 other load. The upper end of the ladder should be 

 elevated about six feet -above the ground. 



HOW TO BUILD A CISTERN. 



Every part around the surface of a cistern should be 

 made close. The beams which support the floor should 

 be bedded in the wall, or shoulder of the cistern, and 



