Discovery of Truth not allied to the ludicrous.—It is for a similar reason that the discovery of any new and important truth in science, however strange and unexpected, never awakens the feeling of the ludicrous. Its importance carries it over into a higher sphere of thought and feeling. Kepler's law of planetary motion must have been at first a strange and wonderful announcement; the chemical identity of charcoal and the diamond presents, in a new and strange relation, objects apparently most unlike and incongruous; yet, in all probability, neither the astronomer, nor the chemist, who made and announced these discoveries, were regarded by the men of the time as having done any thing peculiarly witty. We look at the importance of the results in such cases, and whatever of oddity or incongruity there may be in the ideas or objects thus related, fails to impress the mind in the presence of graver emotions.

Various Forms of the ludicrous.—The incongruity that awakens the feeling of the ludicrous may present itself in many diverse forms. It may relate to objects, or to ideas. In either case, the grouping or bringing together of the incongruous elements may be accidental, or it may be intentional. If accidental, it passes for a blunder; if intentional, it takes the name of wit.

Accidental and intentional grouping of Objects incongruous.—Of the accidental grouping of objects that are incongruous, we have an instance in the case already supposed, of the well dressed and dignified gentleman unexpectedly prostrate in the mud. If in place of the dignified gentleman we have the dandy, or the Broadway exquisite, fresh from the toilet, the incongruity is so much the greater, and so much the greater our mirth. Let the hero of the scene, for instance, be such a one as Hotspur so contemptuously describes as coming to parley with him after battle:—

"When I was dry with rage and extreme toil,
Breathless and faint, leaning upon my sword,
Came there a certain lord, neat, trimly dressed,
Fresh as a bridegroom; and his chin, new-reaped,
Showed like a stubble-land at harvest home.
He was perfumed like a milliner;
And 'twixt his finger and his thumb he held
A pouncet box, which ever and anon
He gave his nose, and took't away again;"

—imagine such a character, with all his finery, floundering in the mud, and the ludicrousness of the scene would be such as to set at naught all attempts at gravity, even on the part of those who seldom smile.

When the incongruous objects are purposely brought into relation for the sake of exciting mirth, the wit may be at the expense of others, in which case we have either the practical joke, or simple buffoonery, imitating the peculiarities and incongruities of others; or the joker may play off his wit at his own expense, and act the clown or the fool for the amusement of observers.

Accidental grouping of incongruous Ideas.—When the incongruity is that not of objects, but of ideas brought into new and unexpected relation, and when this is the result of accident or awkwardness, rather than of design, we have what is termed a blunder or a bull. In such a case there is always involved some inconsistency between the thing meant, and the thing said or done. There is an apparent congruity, but a real incongruity of the related ideas. An instance of this occurs in the anecdote related by Sydney Smith, of a physician, who, being present where the conversation turned upon an English nobleman of rank and fortune, but without children, remarked, with great seriousness, that to be childless was a misfortune, but he thought he had observed that it was hereditary in some families. Of this nature is most of the wit which we call Irish; the result of accident rather than design—a blunder, a bull. It is said that during the late rebellion in Ireland, the enraged populace, on a certain occasion, vented their wrath against a famous banker, by solemnly resolving to burn all his bank-notes which they could lay hands on; forgetting, in their rage, that this was only to make themselves so much the poorer, and him so much the richer. The instance given by Mr. Mahan is also in point, of two Irishmen walking together through the woods, the foremost of whom seizing a branch, as he passed along, and holding it for a while, suddenly let it fly back, whereby his companion behind was suddenly reduced to a horizontal position, but on recovering himself, congratulated his associate on having held back the branch as long as he did, since it must otherwise have killed him.

Intentional grouping of incongruous Ideas.—The intentional grouping of incongruous ideas, for the purpose of exciting the feeling of the ludicrous, is more properly denominated wit. This, again, may assume diverse forms. Where the ideas are entirely dissimilar, but have a name or sound in common, which similarity of mere sound or name is seized upon as the basis of comparison, the wit takes the name of a pun. The more complete the incongruity of the two ideas, thus brought into strange and unexpected relation, under cover of a word, the more perfect the pun, and the more ludicrous the effect. This kind of wit is deservedly reckoned as inferior. "By unremitting exertions," says a quaint writer, "it has been at last put under, and driven into cloisters, from whence it must never again be suffered to emerge into the light of the world." One invaluable blessing, adds the same author, produced by the banishment of punning is, an immediate reduction of the number of wits.

The Burlesque.—When the wit is employed in debasing what is great and imposing, by applying thereto figures and phrases that are mean and contemptible, it takes the name of burlesque. The pages of Hudibras afford abundant illustrations of this form of the ludicrous. The battle of Don Quixote and the wind-mills is a burlesque on the ancient tournaments.