The whole force of conversation depends on how much you can take for granted. Vulgar chess-players have to play their game out; nothing short of the brutality of an actual checkmate satisfies their dull apprehensions. But look at two masters of that noble game! White stands well enough, so far as you can see; but Red says, Mate in six moves;--White looks,--nods;--the game is over. Just so in talking with first-rate men; especially when they are good-natured and expansive, as they are apt to be at table. That blessed clairvoyance which sees into things without opening them, --that glorious license, which, having shut the door and driven the reporter from its key-hole, calls upon Truth, majestic virgin! to get off from her pedestal and drop her academic poses, and take a festive garland and the vacant place on the medius lectus,--that carnival-shower of questions and replies and comments, large axioms bowled over the mahogany like bomb-shells from professional mortars, and explosive wit dropping its trains of many-colored fire, and the mischief-making rain of bon-bons pelting everybody that shows himself,--the picture of a truly intellectual banquet is one which the old Divinities might well have attempted to reproduce in their-- --"Oh, oh, oh!" cried the young fellow whom they call John,--"that is from one of your lectures!" I know it, I replied,--I concede it, I confess it, I proclaim it. "The trail of the serpent is over them all!" All lecturers, all professors, all schoolmasters, have ruts and grooves in their minds into which their conversation is perpetually sliding. Did you never, in riding through the woods of a still June evening, suddenly feel that you had passed into a warm stratum of air, and in a minute or two strike the chill layer of atmosphere beyond? Did you never, in cleaving the green waters of the Back Bay,--where the Provincial blue-noses are in the habit of beating the "Metropolitan" boat-clubs,--find yourself in a tepid streak, a narrow, local gulf-stream, a gratuitous warm-bath a little underdone, through which your glistening shoulders soon flashed, to bring you back to the cold realities of full-sea temperature? Just so, in talking with any of the characters above referred to, one not unfrequently finds a sudden change in the style of the conversation. The lack-lustre eye rayless as a Beacon-Street door-plate in August, all at once fills with light; the face flings itself wide open like the church-portals when the bride and bridegroom enter; the little man grows in stature before your eyes, like the small prisoner with hair on end, beloved yet dreaded of early childhood; you were talking with a dwarf and an imbecile, --you have a giant and a trumpet-tongued angel before you!--Nothing but a streak out of a fifty-dollar lecture.--As when, at some unlooked-for moment, the mighty fountain-column springs into the air before the astonished passer-by,--silver-footed, diamond-