SOURCES OF WATER SUPPLY 



37 



protracted drought. Such arrangements are feasible only where 

 an abundant supply of water is available. Gardens located along 

 the bank of a river or the shore of a lake may be supplied with 

 water by means of a private pumping station operated by a gasoline 

 or steam engine. An ordinary well is seldom adequate to supply 

 water for a market garden of any considerable size. Gardens 

 within the limits of large cities are often in reach of the city water 

 supply. In such cases, that is the most feasible source from which 

 to secure a supply of water for the garden. 





Fig. 



^X 



18. — Irrigatiiiji; oiii(jn^ lu a; '-..;i..i.,, '.:, :-■!.). Tho w:itiT lu 

 the shallow furrows and is flooding the field on the left. 



brukcii uut of 



The Old Plan. — Until within very recent years, the market 

 gardens of the East which were equipped for artificial watering 

 were supplied with water through underground pipes to which 

 short vertical pipes terminating in hose bibs were attached at 

 intervals of from one to two hundred feet. When the watering 

 of a given area was desired, a hose was attached to the nearest 

 bib and the distri})ution of water manipulated by an attendant. 



The most recent development in the line of w^atering market 

 gardens where there is a supply of water under pressure is known 

 as the overhead, or Skinner system of irrigation (Fig. 17). It 

 consists essentially of a line of galvanized iron pipe, extending 

 lengthways of the area to be watered, mounted on posts, and 



