Again there was the dreamy delight of ascending an unknown stream, beneath a sinking moon, into a region where peril made fascination. Since the time of the first explorers, I suppose that those Southern waters have known no sensations so dreamy and so bewitching as those which this war has brought forth. I recall, in this case, the faintest sensations of our voyage, as Ponce de Leon may have recalled those of his wandering search, in the same soft zone, for the secret of the mystic fountain. I remember how, during that night, I looked for the first time through a powerful night-glass. It had always seemed a thing wholly inconceivable, that a mere lens could change darkness into light; and as I turned the instrument on the preceding gunboat, and actually discerned the man at the wheel and the officers standing about him,--all relapsing into vague gloom again at the withdrawal of the glass,--it gave a feeling of childish delight. Yet it seemed only in keeping with the whole enchantment of the scene; and had I been some Aladdin, convoyed by genii or giants, I could hardly have felt more wholly a denizen of some world of romance. But the river was of difficult navigation; and we began to feel sometimes, beneath the keel, that ominous, sliding, grating, treacherous arrest of motion which makes the heart shudder, as the vessel does. There was some solicitude about torpedoes, also,--a peril which became a formidable thing, one year later, in the very channel where we found none. Soon one of our consorts grounded, then another, every vessel taking its turn, I believe, and then in turn getting off, until the Norwich lay hopelessly stranded, for that tide at least, a few miles below Jacksonville, and out of sight of the city, so that she could not even add to our dignity by her visible presence from afar. This was rather a serious matter, as the Norwich was our main naval reliance, the Uncas being a small steamer of less than two hundred tons, and in such poor condition, that Commander Duncan, on finding himself aground, at first quite declined to trust his consort any farther alone. But, having got thus far, it was plainly my duty to risk the remainder with or without naval assistance; and this being so, the courageous officer did not long object, but allowed his dashing subordinate to steam up with us to the city. This left us one naval and one army gunboat; and, fortunately, the Burnside, being a black propeller, always passed for an armed vessel among the Rebels, and we rather encouraged that pleasing illusion.