of the figure situated to the left it is easy to see the process employed
for insulating the line. A commencement is made by digging a ditch in the
street and paving the bottom of it with bricks. Upon these latter there is
laid a mixture of sand and asphalt, and then the wires and bobbins are put
in, and the whole is finally covered with a new insulating layer.

It is a simple statement that we make here, and it is therefore not for us
to discuss the advantages and disadvantages of the system. If we are to
believe Mr. Enuma, the advantages are very numerous, to wit: (1) The
cables have no need of being of large size; (2) the intensity is the same
through the entire extent of the primary circuit, secondary one, etc.; (3)
the resistance is invariable in all portions of the line; (4) the
apparatus are independent of each other, and consequently there may be a
disturbance in one or several of them without the others suffering
therefrom; (5) either a strong or weak luminous intensity may be produced,
since, that depends only upon the size of the coil employed; (6) there is
no style of lamp that may not be used, since each lamp is mounted upon a
special circuit; (7) any number of lamps may be lighted or extinguished
without the others being influenced thereby; (8) when a fire or other
accident happens in a house, it in no wise interferes with the service in
the rest of the line; (9) the system could, were it required, be connected
with any other kind of existing line; and (10) the cost of installation is
infinitely less than that of a system of gas pipes embracing the same
extent of ground.--_La Lumiere Electrique._

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