ever. A physical fooling of turgescence and congestion in that region,
such as swimmers often feel, probably increased the impression. I
thought with envy of the Aztec children, of the headless horseman of
Sleepy Hollow, of Saint Somebody with his head tucked under his arm.
Plotinus was less ashamed of his whole body than I of this inconsiderate
and stupid appendage. To be sure, I might swim for a certain distance
under water. But that accomplishment I had reserved for a retreat, for I
knew that the longer I stayed down the more surely I should have to
snort like a walrus when I came up again, and to approach an enemy with
such a demonstration was not to be thought of.

Suddenly a dog barked. We had certain information that a pack of hounds
was kept at a Rebel station a few miles off, on purpose to hunt
runaways, and I had heard from the negroes almost fabulous accounts of
the instinct of these animals. I knew, that, although water baffled
their scent, they yet could recognize in some manner the approach of any
person across water as readily as by land; and of the vigilance of all
dogs by night every traveller among Southern plantations has ample
demonstration. I was now so near that I could dimly see the figures of
men moving to and fro upon the end of the causeway, and could hear the
dull knock, when one struck his foot against a piece of timber.

As my first object was to ascertain whether there were sentinels at that
time at that precise point, I saw that I was approaching the end of my
experiment. Could I have once reached the causeway unnoticed, I could
have lurked in the water beneath its projecting timbers, and perhaps
made my way along the main shore, as I had known fugitive slaves to do,
while coming from that side. Or had there been any ripple on the water,
to confuse the aroused and watchful eyes, I could have made a circuit
and approached the causeway at another point, though I had already