The spirit of God is a signal of warning to the soul when floods of
evil are imminent.
Spain is subject to more frequent sudden inundations, perhaps,
than any other country in Europe, and the necessity for some
device to give warning may be appreciated. Such an alarm, ready
night and day to notify the population along a river-bank of
the approach of a dangerous flood, has been invented by Ramon
Martinez di Campos, an engineer of Murcia. It is described as
follows:
“The device uses the electric current; when an abnormal
stage of the river is reached the water closes a circuit and
thus starts an alarm signal at a great distance down-stream.
In the present arrangement the automatic circuit-closer
consists of a galvanized iron float which at high water makes
contact with a fixt sheet of metal on a pole or a masonry
support.”--_Cosmos._
(3433)