convey 1850 tons of goods each way per diem, which seems a very fair
performance for an inch rope. The arrangement of the line with only one
rod instead of two rails diminishes friction very greatly. The carriages
run as light as bicycles. The same peculiarity allows very sharp curves
to be taken, but I am without experimental tests as yet of the limit
in this respect. Further, we now know that we can insulate the line
satisfactorily, even if very high potentials come to be employed. The
grip of the locomotive is admirable and almost frictionless, the gear is
silent and runs very easily. It is suited for the highest speeds, and
this is very necessary, as the motors may with advantage, run at 2,000
revolutions per minute.

* * * * *




MACHINE FOR MAKING ELECTRIC LIGHT CARBONS.


One of the hinderances to the production of a regular and steady light
in electric illumination is the absence of perfect uniformity in the
carbons. This defect has more than once been pointed out by us, and we
are glad to notice any attempt to remedy an admitted evil. To this end
we illustrate above a machine for manufacturing carbons, invented by
William Cunliffe. The object the inventor has in view is not only the
better but the more rapid manufacture of carbons, candles, or electrodes
for electric lighting or for the manufacture of rods or blocks of carbon
or other compressible substances for other purposes, and his invention
consists in automatic machinery whereby a regular and uniform pressure