In the dank twilight, fanned with mosquitoes, and sparkling with fire-flies, the boat now lies before Cairo. She has landed certain passengers, and tarries for the coming of expected ones. Leaning over the rail on the inshore side, the Missourian eyes through the dubious medium that swampy and squalid domain; and over it audibly mumbles his cynical mind to himself, as Apermantus' dog may have mumbled his bone. He bethinks him that the man with the brass-plate was to land on this villainous bank, and for that cause, if no other, begins to suspect him. Like one beginning to rouse himself from a dose of chloroform treacherously given, he half divines, too, that he, the philosopher, had unwittingly been betrayed into being an unphilosophical dupe. To what vicissitudes of light and shade is man subject! He ponders the mystery of human subjectivity in general. He thinks he perceives with Crossbones, his favorite author, that, as one may wake up well in the morning, very well, indeed, and brisk as a buck, I thank you, but ere bed-time get under the weather, there is no telling how--so one may wake up wise, and slow of assent, very wise and very slow, I assure you, and for all that, before night, by like trick in the atmosphere, be left in the lurch a ninny. Health and wisdom equally precious, and equally little as unfluctuating possessions to be relied on. But where was slipped in the entering wedge? Philosophy, knowledge, experience--were those trusty knights of the castle recreant? No, but unbeknown to them, the enemy stole on the castle's south side, its genial one, where Suspicion, the warder, parleyed. In fine, his too indulgent, too artless and companionable nature betrayed him. Admonished by which, he thinks he must be a little splenetic in his intercourse henceforth.