s turn, through the pinions,
M' and M, the pitch pinion, N, upon whose prolonged hub is keyed the
pinion, M. This latter is mounted loosely upon the intermediate axle,
_m_. Motion is transmitted to the driving shaft, _h_, of the endless
chain, I, by an ordinary pitch chain, through a gearing which is shown
in Fig. 12. The pitch pinion, N', is cast in a piece with a hollow
friction cone, N squared, which is mounted loosely upon the shaft, _h_, and
to which corresponds a second friction cone, O. This latter is
connected by a key to a socket, _o_, upon which it slides, and which
is itself keyed to the shaft, _h_. The hub of the cone, O, is
connected by a ring with a bronze nut, _p_, mounted at the threaded
end of the shaft, _h_, and carrying a hand-wheel, P. It is only
necessary to turn this latter in one direction or the other in order
to throw the two cones into or out of gear.

If we allow that the motor has a velocity of 70 revolutions per
minute, the decorticating cylinder will run at the rate of 50, and the
sugar-cane will move forward at the rate of 12 meters per minute.

This new machine is a very simple and powerful one. The decortication
is effected with wonderful rapidity, and the canes, opened throughout
their entire length and at all points of their circumference, leave
the apparatus in a state that allows of no doubt as to what the result
of the pressure will be that they have to undergo. There is no
tearing, no trituration, no loss of juice, but merely a simple
preparation for a rational pressure effected under most favorable
conditions.

The apparatus, which is made in several sizes, has already received
numerous applications in Martinique, Trinidad, Cuba, Antigua, St.
Domingo, Peru, Australia, the Mauritius Islands, and
Brazil.--_Publication Industrielle._

* * * * *

MOVING A BRIDGE.

An interesting piece of engineering work has recently been
accomplished at Bristol, England, which consisted in the moving of a
foot-bridge 134 feet in length, bodily, down the river a considerable
distance. The pontoons by means of which the bridge was floated to its
new position consisted of four 80-ton barges, braced together so as to
form one solid structure 64 feet in width, and were placed in position
soon after the tide commenced to rise. At six o'clock A.M. the top of
the stages, which was 24 feet above the water, touched the under part
of the bridge, and in a quarter of