Setting the Alarm.--A good many alarm clocks are not to be relied upon to
act within a quarter of an hour or so of the time to which they are set.
But absolute accuracy of working may be obtained if the clock hands are
first set to the desired hour, and the alarm dial hand revolved slowly till
the alarm is released. The hands are then set at the correct time, and the
alarm fully wound.
XIII. A MODEL ELECTRIC RAILWAY.
The rapid increase in the number of electrically worked railways, and the
substitution of the electric for the steam locomotive on many lines, give
legitimate cause for wondering whether, twenty or so years hence, the
descendants of the "Rocket" will not have disappeared from all the railways
of the world, excepting perhaps those of transcontinental character.
[Illustration: Fig. 41.--Electric Locomotive.]
The change is already spreading to model plant, and not without good
reason, as the miniature electric railway possesses decided advantages of
its own. Instead of having to chase the locomotive to stop or reverse it,
one merely has to press a button or move a switch.
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