ing
automatically when the tide recedes. The machinery of an old grist
mill is used to operate a small dynamo, which charges a storage
battery and furnishes light for the fish industry there. Another wheel
in the same mill works an ice making machine, the whole being under
the charge of one man. It is stated that the total daily expense for
generating about 2,000 horse power hours is only $2.

PEAT BOGS as generators of electrical power are suggested by Dr.
Frank in Stahl und Eisen. He says that the great peat bogs of North
Germany may be thus utilized, and figures that one acre of bog,
averaging 10 feet in thickness, contains about 1,000 tons of dried
peat, or 313,000 tons per square mile; and 430 square miles would be
equivalent in heating power to the 80,000,000 to 85,000,000 tons of
coal annually mined in Germany. The bogs of the Ems Valley alone cover
13,000 square miles; and Dr. Frank proposes the erection in that
district of a 10,000 horse power electric station, which would yearly
consume 200,000 tons of peat, or the product of 200 acres. He would
use the electrical energy on the Dortmund and Emshaven Canal, and for
the manufacture of calcium carbide.

THE SUCCESS attending an application of electric towing on the
Burgundy Canal was such that two new applications of electricity to
canal haulage and also for barge propulsion were made last year in the
neighborhood of Dijon, on the same canal, under the superintendence of
M. Gaillot, Ingenieur des Ponts et Chaussees. In the method of
haulage, says The London Engineer, the receptor dynamo is mounted on a
tricycle, to which the name of "electric horse" has been given, and
which, running on the towing path, takes its current from an air line
consisting of two wires, mounted five meters (nearly 17 feet) above
the surface. This "horse," which weighs two tons, and is guided by a
driver mounted upon it through the front wheel, proceeds on the towing
path like a traction engine; and the boats are connected with it by a
rope, with automatic disengaging gear, in case the force of the stream
or a gust of wind should drive a boat backward. Speeds of from 1,990
to 4,240 meters (mean 3,319 yards) were obtained with the electric
horse, towing from three to four boats, so that it is more suitable
than the electric propeller for towage in rivers or very long reaches;
but it requires a driver, while the propeller, with which speeds of
from 2,150 to 4,240 meters (mean 3,406 yards)