The canvas having been snugly furled, the boats, under the command of the first lieutenant, the master, the boatswain, and the gunner, were manned, armed, and dispatched into the river, the whole expedition being, of course, under the command of Mr Seaton, in whose boat went Peter Christy, one of the midshipmen, while young Keene, another midshipman, contrived to smuggle himself down into the master's boat. Of course I applied for leave to go with the expedition, but, being on the sick list, was peremptorily forbidden even to dream of such a thing, for Morgan, our surgeon, declared that in my run-down condition I was utterly unfit to face the risks of exposure to the fever-laden fog which would certainly be encountered in the river.  The night was not especially favourable for an expedition intended to take ships by surprise; for although the sky was somewhat cloudy, it was by no means sufficiently so to obscure very materially the light of the moon, which was then in her first quarter.  But she would set shortly after midnight, and meanwhile her light would facilitate the passage of the boats across the bar, after the accomplishment of which the plan was to endeavour to discover the position of the vessel that we were after--or, failing her, any other craft that might be in the river--and then ambush the boats until the moon had gone down.  We gave the boats a cheer as they pulled away, and watched them until they vanished in the shadowy obscurity inshore; after which, as we expected to see nothing more of them until daylight, the watch was piped down, and going below I turned in.  The night, however, was intensely hot, and the atmosphere of the midshipmen's berth intolerably stuffy.  I therefore slept but poorly, and was up and down, at intervals of about an hour, all through the night, listening for the sound of firing, and hoping that perchance the reflection of gun-flashes on the clouds might indicate that the boats had found their quarry.  Once or twice, about three o'clock in the morning, some of us who, like myself, were on the qui vive, thought we caught the muffled sound of distant firing coming off to us on the damp night breeze, but the everlasting thunder of the surf on the sand a mile away was so loud that we might easily have been deceived.  That something important, however, was happening ashore was evident, for about this time we saw the reflection of a brilliant glare in the sky which lasted nearly an hour, and then gradually died down.