ng journeys, two spare ball-clacks, and a screw-jack.

THE MANAGEMENT OF A LOCOMOTIVE ENGINE ON THE ROAD.

In the management of a Locomotive Engine, many unforeseen circumstances
may occur, requiring the use of that discretion which experience alone
can confer, and which it would be almost impossible to comprise in the
particular instructions contained in the following pages, which, however,
the writer believes to contain all the leading principles of
Engine-driving.

On receiving the signal to start, the Engine-man should only slightly
open the regulator, and let the train run for several yards, before he
opens it, by slow degrees, to the full extent. The object of thus giving
a slight aperture to the regulator in starting, is to avoid any jerk to
the carriages, by which passengers might be annoyed, or even the
coupling-irons broken; to prevent the slipping of the driving-wheels,
from their adhesion being unequal to the inertia of the train, when the
full power of the Engine is suddenly used; and because fully opening the
regulator at starting generally causes the Engine to _prime_
considerably, from the quantity of water condensed in the cylinders and
steam-passages while the Engine was standing. When _priming_ occurs at
starting, the discharge-cocks of the cylinders should be opened to remove
the water. On leaving the station, and frequently on the road, the
Engine-man should watch the train behind him, to see that it is all right
and its motion regular.

The Engine-man should now be standing on the foot-board of the Engine,
which he ought never to leave, unless the machinery is out of order, when
he may leave the Stoker in his place; he should as much as possible be in
such a position as to command, without moving from his place, the
reversing-lever, the whistle, and the regulator, these being the parts
which he is most frequently obliged to use at the shortest notice; his
hand should be upon the regulator, which, when he has arrived at a good
speed, he will gradually ease off, so as to economise steam without
retarding the train: his eye should be constantly directed to the rails
in front of him, that he may be immediately aware of any obstruction, and
at the same time his full attention must be given to the maintaining a
sufficiency of steam at an equable pressure; this is to be done by using
the requisite care in the manner and time of supplying _water_ and
_fuel_.

Water is supplied by opening the