It Increases Fire Pressure.
A correspondent at Yankton, S. D., writes us under recent date : Yankton's city council has ordered the purchase of an “air life plant,” to cost $1,335, and a steam boiler to operate the air lift.
This is a new invention and one that is attiacting considerable attention. It is an apparatus by means of which compressed air is pumped into the pipe of an artesian (or other) well at a considerable distance below the surface. By expansion this air gives additional pressure behind the water and lifts it beyond the altitude reached by the natural pressure. The idea is borrowed from the oil wells of the east, where natural gas pressure below creates flowing wells. There is however, a limit to the lifting power of both gas and air, used naturally or artilically. Beyond a certain pressure it passes through the water and reaches the surface in the form of bubbles.
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