fixed the customary simple iron handrail, carried by light cast-iron
standards. The iron piers are each formed of four columns, and the columns
consist of two Barlow rails, with a slotted iron plate ½ inch thick let in
between the rails, and the whole being riveted together connects each pair
of side columns.

The details show the system of cross and diagonal bracing. The columns are
each supported by four buttresses formed of plates and angle-irons. These
buttresses, fastened with bolts 8 ft. 3 in. long, let into the masonry
pillars, secure the stability of the viaduct against lateral strains, due
mostly to the centrifugal force caused by the passage of the trains.

The Barlow rails, which constitute the peculiarity of the structure, are
from those taken up from the permanent way when the Vignoles pattern of
rail was adopted on this railway. The whole of the foundations were built
without difficulty. The principal parts of the iron work were calculated to
resist the strains resulting from a weight of 4 tons 8 cwt. per lineal
meter traveling over the viaduct at a velocity of 60 kilometers, or about
37 miles, per hour.

In spite of its fragile appearance this viaduct has, up to the present
time, served in a most satisfactory manner the purpose for which it was
built.--_Engineering_.

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SEA-GOING TORPEDO BOATS.