As I drew near the opposite shore, the dark causeway projected more and more distinctly, to my fancy at least, and I swam more softly still, utterly uncertain as to how far, in the stillness of air and water, my phosphorescent course could be traced by eye or ear. A slight ripple would have saved me from observation, I was more than ever sure, and I would have whistled for a fair wind as eagerly as any sailor, but that my breath was worth more than anything it was likely to bring. The water became smoother and smoother, and nothing broke the dim surface except a few clomps of rushes and my unfortunate head. The outside of this member gradually assumed to its inside a gigantic magnitude; it had always annoyed me at the hatter’s from a merely animal bigness, with no commensurate contents to show for it, and now I detested it more than 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.