PERPETUAL PRESIDENT MAUPERTUIS HAS A VISIT FROM ONE KONIG, OUT OF HOLLAND, CONCERNING THE INFINITELY LITTLE.

Whether Maupertuis, in red wig with yellow bottom, saw these high gauderies of the Carrousel, the Plays in Princess Amelia's Antechamber, and the rest of it, I do not know: but if so, he was not in the top place; nor did anybody take notice of him, as everybody did of Voltaire. Meanwhile, I have something to quote, as abridged and distilled from various sources, chiefly from Formey; which will be of much concernment farther on.

Some four weeks after those Carrousel effulgencies, Perpetual President Maupertuis had a visit (September 21st, just while the Sun was crossing the Line; thanks to Formey for the date, who keeps a Note-book, useful in these intricacies): visit from Professor Konig, an effective mathematical man from the Dutch parts. Whom readers have forgotten again; though they saw him once: in violent quarrel, about the Infinitely Little, with Madame du Chatelet, Voltaire witnessing with pain;—it was just as they quitted Cirey together, ten years ago, for these new courses of adventure. Do readers recall the circumstance? Maupertuis, referee in that quarrel, had, with a bluntness offensive to the female mind, declared Konig indisputably in the right; and there had followed a dryness between the divine Emilie and the Flattener of the Earth, scarcely to be healed by Voltaire's best efforts.

Konig has gone his road since then; become a fine solid fellow; Professor in a Dutch University; more latterly Librarian to the Dutch Stadtholder: still frank of speech, and with a rugged free-and-easy turn, but of manful manners; really a person of various culture, and as is still noticeable, of a solid geometric turn of mind. Having now, as Librarian at the Hague, more leisure and more money, he has made a run to Berlin,—chiefly or entirely to see his Maupertuis again, whom he still remembers gratefully as his first Patron in older times, and a man of sound parts, though rather blusterous now and then, A little bit of scientific business also he has with him. Konig is Member of the Berlin Academy, for some years back; and there is a thing he would speak with the Perpetual President upon. "Wants nothing else in Berlin," says Formey: a hearing by the road that Maupertuis was not there, he had actually turned homewards again: but got truer tidings, and came on. "The more was the pity, as perhaps will appear!"He arrived September 20th [if you will be particular on cheese-parings]; called on me that day, being lodged in my neighborhood; and next day, found Maupertuis at home;" [Formey, i. 176-179.]—and flew into his arms again, like a good boy long absent.

Maupertuis, not many months ago, had, in Two successive Papers, I think Two, communicated to the Academy a Discovery of Metaphysico-Mathematical or altogether Metaphysical nature, on the Laws of Motion;—Discovery which he has, since that, brought to complete perfection, and sent forth to the Universe at large, in his sublime little Book of COSMOLOGY; [In La Beaumelle,—Vie de Maupertuis—(Paris, 1856), pp. 105-130, confused account of this "Discovery," and of the gradual Publication of it to mankind,—very gradual; first of all in the old Paris times; in the Berlin ACADEMY latterly; and in fine, to all the world, in this ESSAI DE COSMOLOGIE (Berlin, Summer of 1750).]—grateful Academy striving to admire, and believe, with its Perpetual President, that the Discovery was sublime to a degree; second only to the flattening of the Earth; and would probably stand thenceforth as a milestone in the Progress of Human Thought. "Which Discovery, then?" Be not too curious, reader; take only of it what shall concern you!

It is well known there have been, to the metaphysical head, difficulties almost insuperable as to How, in the System of Nature, Motion is? How, in the name of wonder, it can be; and even, Whether it is at all? Difficulties to the metaphysical head, sticking its nose into the gutter there;—not difficult to my readers and me, who can at all times walk across the room, and triumphantly get over them. But stick your nose into any gutter, entity, or object, this of Motion or another, with obstinacy,—you will easily drown, if that be your determination!—Suffice it for us to know in this matter, that Maupertuis, intensely watching Nature, has discovered, That the key of her enigma (or at least the ultimate central DOOR, which hides all her Motional enigmas, the key to WHICH cannot even be imagined as discoverable!) is, that "Nature is superlatively THRIFTY in this affair of motion;" that she employs, for every Motion done or do-able, "a MINIMUM OF ACTION;" and that, if you well understand this, you will, at least, announce all her procedures in one proposition, and have found the DOOR which leads to everything. Which will be a comfort to you; still looking vainly for the key, if there is still no key conceivable.

Perpetual President Maupertuis, having surprised Nature in this manner, read Papers upon it to an Academy listening with upturned eyes; new Papers, perfected out of old,—for he has long been hatching these Phoenix-eggs; and has sent them out complete, quite lately, in a little Book called COSMOLOGIE, where alone I have had the questionable benefit of reading them. Grandly brief, as if coming from Delphi, the utterance is; loftily solemn, elaborately modest, abstruse to the now human mind; but intelligible, had it only been worth understanding:—a painful little Book, that COSMOLOGIE, as the Perpetual President's generally are. "Minimum of Action, LOI D'EPARGNE, Law of Thrift," he calls this sublime Discovery;—thinks it will be Sovereign in Natural Theology as well: "For how could Nature be a Save-all, without Designer present?"—and speaks, of course, among other technical points, about "VIS VIVA, or Velocity multiplied by the Square of the Time:" which two points, "LOI D'EPARGNE," and that "the VIS VIVA is always a Minimum," the reader can take along with him; I will permit him to shake the others into Limbo again, as forgettable by human nature at this epoch and henceforth.

In La Beaumelle's—Vie de Maupertuis—(printed at last, Paris, 1856, after lying nearly a century in manuscript, an obtuse worthless leaden little Book), there is much loud droning and detailing, about this COSMOLOGIE, this sublime "Discovery," and the other sublime Discoveries, Insights and Apocalyptic Utterances of Maupertuis; though in so confused a fashion, it is seldom you can have the poor pleasure of learning exactly when, or except by your own severe scrutiny, exactly what. For reasons that will appear, certain of those Apocalyptic Utterances by Perpetual President Maupertuis have since got a new interest, and one has actually a kind of wish to read the IPSISSIMA VERBA of them, at this date! But in La Beaumelle (his modern Editor lying fast asleep throughout) there is no vestige of help. Nay Maupertuis's own Book, [—OEuvres de Maupertuis,—Lyon, 1756, 4 vols. 4to.] luxurious cream-paper Quartos, or Octaves made four-square by margin,—which you buy for these and the cognate objects,—proves altogether worthless to you. The Maupertuis Quartos are not readable for their own sake (solemnly emphatic statement of what you already know; concentrated struggle to get on wing, and failure by so narrow a miss; struggle which gets only on tiptoe, and won't cease wriggling and flapping); and then (to your horror) they prove to be carefully cleaned of all the Maupertuis-VOLTAIRE matter;—edition being SUBSEQUENT to that world-famous explosion. CAVEAT EMPTOR.—Our Excerpt proceeds:—

"Industrious Konig, like other mathematical people, has been listening to these Oracles on the 'Law of Minimum,' by the Perpetual President; and grieves to find, after study, That said Law does not quite hold; that in fact it is, like Descartes's old key or general door, worth little or nothing; as Leibnitz long ago seems to have transiently recognized. Konig has put his strictures on paper: but will not dream of publishing, till the Perpetual President have examined them and satisfied himself; and that is Konig's business at present, as he knocks on Maupertuis, while Sol is crossing the Line. Maupertuis has a House of the due style: Wife a daughter of Minister Borck's (high Borcks, 'old as the DIUVEL'); no children;—his back courts always a good deal dirty with pelicans, bustards, perhaps snakes and other zoological wretches, which sometimes intrude into the drawing-rooms, otherwise very fine. A man of some whims, some habits; arbitrary by nature, but really honest, though rather sublimish in his interior, with red Wig and yellow bottom.

"Konig, all filial gladness, is received gladly;—though, by degrees, with some surprise, on the paternal part, to find Konig ripened out of son, client and pupil, into independent posture of a grown man. Frankly certain enough about himself, and about the axioms of mathematics. Standing, evidently, on his own legs; kindly as ever, but on these new terms,—in fact rather an outspoken free-and-easy fellow (I should guess), not thinking that offence can be taken among friends. Formey confesses, this was uncomfortable to Maupertuis; in fact, a shock which he could not recover from. They had various meetings, over dinner aud otherwise, at the Perpetual President's, for perhaps two weeks at this time (dates all to be had in Formey's Note-book, if anybody would consult); in the whole course of which the shock to the Perpetual President increased, instead of diminishing. Republican freedom and equality is evidently Konig's method; Konig heeds not a whit the oracular talent or majestic position of Maupertuis; argues with the frankest logic, when he feels dissent;—drives a majestic Perpetual President, especially in the presence of third parties, much out of patience. Thus, one evening, replying to some argument of the Perpetual President's, he begins: 'My poor friend, MON PAUVRE AMI, don't you perceive, then'—Upon which Maupertuis sprang from his chair, violently stamping, and pirouetted round the room, 'Poor friend, poor friend? are you so rich: then!' frank Konig merely grinning till the paroxysm passed. [Formey, i. 177.] Konig went home again, RE INFECTA about the end of the month."

Such a Konig—had better not have come! As to his strictures on the LAW OF THRIFT, the arguings on them, alone together, or with friends by, merely set Maupertuis pirouetting: and as to the Konig Manuscripts on them "to be published in the Leipzig ACTA, after your remarks and permission," Maupertuis absolutely refused to look at said Manuscripts: "Publish them there, here, everywhere, in the Devil and his Grandmother's name; and then there is an end, Monsieur!" Konig went his ways therefore, finding nothing else for it; published his strictures, in the Leipzig ACTA in March next,—and never saw Maupertuis again, for one result, out of several that followed! I have no doubt he was out to Voltaire, more than once, in this fortnight; and eat "the King's roast" pleasantly with that eminent old friend. Voltaire always thought him a BON GARCON (justly, by all the evidence I have); and finds his talk agreeable, and his Berlin news—especially that of Maupertuis and his explosive pirouettings. Adieu, Herr Professor; you know not, with your Leipzig ACTA and Fragment of Leibnitz, what an explosion you are preparing!