the top of isolated buildings or country dwellings, with its liability
of leakage and destruction of property, why not have a water tank in the
cellar operated by means of compressed air? By being placed in the
cellar or underground, there would be the additional advantage of having
the water drawn cool and fresh. In winter also, it would be much better
protected from freezing than when placed on top of a building. Some one
will find money in a pneumatic water tank.