To this point, therefore, I rode, and dismounting, after being duly challenged by the sentinel at the causeway-head, walked down the long and lonely path. The tide was well up, though still on the flood, as I desired; and each visible tuft of marsh-grass might, but for its motionlessness, have been a prowling boat. Dark as the night had appeared, the water was pale, smooth, and phosphorescent, and I remember that the phrase "wan water," so familiar in the Scottish ballards, struck me just then as peculiarly appropriate, though its real meaning is quite different. A gentle breeze, from which I had hoped for a ripple, had utterly died away, and it was a warm, breathless Southern night. There was no sound but the faint swash of the coming tide, the noises of the reed-birds in the marshes, and the occasional leap of a fish; and it seemed to my overstrained ear as if every footstep of my own must be heard for miles. However, I could have no more postponements, and the thing must be tried now or never.
Reaching the farther end of the causeway, I found my men couched, like black statues, behind the slight earthwork there constructed. I expected that my proposed immersion would rather bewilder them, but knew that they would say nothing, as usual. As for the lieutenant on that post, he was a steady, matter-of-fact, perfectly disciplined Englishman, who wore a Crimean medal, and never asked a superfluous question in his life. If I had casually remarked to him, "Mr. Hooper, the General has ordered me on a brief personal reconnoissance to the Planet Jupiter, and I wish you to take care of my watch, lest it should be damaged by the Precession of the Equinoxes," he would have responded with a brief "All right, Sir," and a quick military gesture, and have put the thing in his pocket. As it was, I simply gave him the watch, and remarked that I was going to take a swim.
I do not remember ever to have experienced a greater sense of exhilaration than when I slipped noiselessly into the placid water, and struck out into the smooth, eddying current for the opposite shore. The night was so still and lovely, my black statues looked so dream-like at their posts behind the low earthwork, the opposite arm of the causeway stretched so invitingly from the Rebel main, the horizon glimmered so low around me,—for it always appears lower to a swimmer than even to an oarsman,—that I seemed floating in some concave globe, some magic crystal, of which I was the enchanted centre. With each little ripple of my steady progress all things hovered and changed; the stars danced and nodded above; where the stars ended the great Southern fireflies began; and closer than the fireflies, there clung round me a halo of phosphorescent sparkles from the soft salt water.
Had I told any one of my purpose, I should have had warnings and remonstrances enough. The few negroes who did not believe in alligators believed in sharks; the sceptics as to sharks were orthodox in respect to alligators; while those who rejected both had private prejudices as to snapping-turtles. The surgeon would have threatened intermittent fever, the first assistant rheumatism, and the second assistant congestive chills; non-swimmers would have predicted exhaustion, and swimmers cramp; and all this before coming within bullet-range of any hospitalities on the other shore. But I knew the folly of most alarms about reptiles and fishes; man's imagination peoples the water with many things which do not belong there, or prefer to keep out of his way, if they do; fevers and congestions were the surgeon's business, and I always kept people to their own department; cramp and exhaustion were dangers I could measure, as I had often done; bullets were a more substantial danger, and I must take the chance,—if a loon could dive at the flash, why not I? If I were once ashore, I should have to cope with the Rebels on their own ground, which they knew better than I; but the water was my ground, where I, too, had been at home from boyhood.
I swam as swiftly and softly as I could, although it seemed as if water never had been so still before. It appeared impossible that anything uncanny should hide beneath that lovely mirror; and yet when some floating wisp of reeds suddenly coiled itself around my neck, or some unknown thing, drifting deeper, coldly touched my foot, it caused that undefinable shudder which every swimmer knows, and which especially comes over one by night. Sometimes a slight sip of brackish water would enter my lips,—for I naturally tried to swim as low as possible,—and then would follow a slight gasping and contest against chocking, that seemed to me a perfect convulsion; for I suppose the tendency to choke and sneeze is always enhanced by the circumstance that one's life may depend on keeping still, just as yawning becomes irresistible where to yawn would be social ruin, and just as one is sure to sleep in church, if one sits in a conspicuous pew. At other times, some unguarded motion would create a splashing which seemed, in the tension of my senses, to be loud enough to be heard at Richmond, although it really mattered not, since there are fishes in those rivers which make as much noise on special occasions as if they were misguided young whales.
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 to me more than anything it was likely to bring. The water became smoother and smoother, and nothing broke the dim surface except a few clumps 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 feeling 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 limber.
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 satisfied myself that there was only a narrow channel on each side of it, even at high tide, and not, as on our side, a broad expanse of water. Indeed, this knowledge alone was worth all the trouble I had taken, and to attempt much more than this, in the face of a curiosity already roused, would have been a waste of future opportunities. I could try again, with the benefit of this new knowledge, on a point where the statements of the negroes had always been contradictory.
Resolving, however, to continue the observation a very little longer, since the water felt much warmer than I had expected, and there was no sense of chill or fatigue, I grasped at some wisps of straw or rushes that floated near, gathering them round my face a little, and then drifting nearer the wharf in what seemed a sort of eddy was able, without creating further alarm, to make some additional observations on points which it is not best now to particularize. Then, turning my back upon the mysterious shore which had thus far lured me, I sank softly below the surface, and swam as far as I could under water.
During this unseen retreat, I heard, of course, all manner of gurglings and hollow reverberations, and could fancy as many rifle-shots as I pleased. But on rising to the surface all seemed quiet, and even I did not create as much noise as I should have expected. I was now at a safe distance, since the enemy were always chary of showing their boats, and always tried to convince us they had none. What with absorbed attention first, and this submersion afterwards, I had lost all my bearings but the stars, having been long out of sight of my original point of departure. However, the difficulties of the return were nothing; making a slight allowance for the floodtide, which could not yet have turned, I should soon regain the place I had left. So I struck out freshly against the smooth water, feeling just a little stiffened by the exertion, and with an occasional chill running up the back of the neck, but with no nips from sharks, no nudges from alligators, and not a symptom of fever-and-ague.