which stretched before her,--when suddenly a single light shot its rays
from what appeared to be a considerable distance in one of the avenues.
Paulina's heart beat fast at this alarming spectacle. Immediately
after, the light was shaded, or in some way disappeared. But this gave
the more reason for terror. It was now clear that human beings were
moving in the woods. No public road lay in that direction; nor, in so
unpopulous a region, could it be imagined that travellers were likely
at that time to be abroad. From their own encampment nobody could have
any motive for straying to a distance on so severe a night, and at a
time when he would reasonably draw upon himself the danger of being
shot by the night-guard.

This last consideration reminded Paulina suddenly, as of a very
singular circumstance, that the appearance of the light had been
followed by no challenge from the sentinel. And then first she
remembered that for some time she had ceased to hear the sentinel's
step, or the rattle of his bandoleers. Hastily looking along the path,
she discovered too certainly that the single sentinel posted on that
side of their encampment was absent from his station. It might have
been supposed that he had fallen asleep from the severity of the cold;
but in that case the lantern which he carried attached to his breast
would have continued to burn; whereas all traces of light had vanished
from the path which he perambulated. The error was now apparent to
Paulina, both in having appointed no more than one sentinel to this
quarter, and also in the selection of his beat. There had been frequent
instances throughout this war in which by means of a net, such as that
carried by the Roman _retiarius_ in the contests of the gladiators,
and dexterously applied by two persons from behind, a sentinel
had been suddenly muffled, gagged, and carried off, without much
difficulty. For such a purpose it was clear that the present