excelled in most physical exercises; he could, moreover, sing a ballad
and applaud a witticism. Supple, envious, never at a loss, there was
nothing that he did not know--nothing that he really knew. He knew
nothing, for instance, of music, but he could sit down to the piano
and accompany, after a fashion, a woman who consented after much
pressing to sing a ballad learned by heart in a month of hard
practice. Incapable though he was of any feeling for poetry, he would
boldly ask permission to retire for ten minutes to compose an
impromptu, and return with a quatrain, flat as a pancake, wherein
rhyme did duty for reason. M. du Chatelet had besides a very pretty
talent for filling in the ground of the Princess' worsted work after
the flowers had been begun; he held her skeins of silk with infinite
grace, entertained her with dubious nothings more or less
transparently veiled. He was ignorant of painting, but he could copy a
landscape, sketch a head in profile, or design a costume and color it.
He had, in short, all the little talents that a man could turn to such
useful account in times when women exercised more influence in public
life than most people imagine. Diplomacy he claimed to be his strong
point; it usually is with those who have no knowledge, and are
profound by reason of their emptiness; and, indeed, this kind of skill
possesses one signal advantage, for it can only be displayed in the
conduct of the affairs of the great, and when discretion is the
quality required, a man who knows nothing can safely say nothing, and
take refuge in a mysterious shake of the head; in fact; the cleverest
practitioner is he who can swim with the current and keep his head
If there ever was a case of appropriateness in discovery, the finding
of this manuscript in the summer of 1906 was one. In the first place
it was appropriate that the discovery should be made in
Constantinople, since it was here that the West received its first
manuscripts of the other extant works, nine in number, of the great
Syracusan. It was furthermore appropriate that the discovery should be
made by Professor Heiberg, \emph{facilis princeps} among all workers
in the field of editing the classics of Greek mathematics, and an
indefatigable searcher of the libraries of Europe for manuscripts to
aid him in perfecting his labors. And finally it was most appropriate
that this work should appear at a time when the affiliation of pure
and applied mathematics is becoming so generally recognized all over
the world. We are sometimes led to feel, in considering isolated
cases, that the great contributors of the past have worked in the
field of pure mathematics alone, and the saying of Plutarch that
Archimedes felt that ``every kind of art connected with daily needs
was ignoble and vulgar''\footnote{Marcellus, 17.} may have
strengthened this feeling. It therefore assists us in properly
orientating ourselves to read another treatise from the greatest
mathematician of antiquity that sets clearly before us his
indebtedness to the mechanical applications of his subject.
well above the stream of events which he appears to control, a man's
fitness for this business varying inversely as his specific gravity.
But in this particular art or craft, as in all others, you shall find
a thousand mediocrities for one man of genius; and in spite of
Chatelet's services, ordinary and extraordinary, Her Imperial Highness
could not procure a seat in the Privy Council for her private
secretary; not that he would not have made a delightful Master of
Requests, like many another, but the Princess was of the opinion that
her secretary was better placed with her than anywhere else in the
world. He was made a Baron, however, and went to Cassel as
envoy-extraordinary, no empty form of words, for he cut a very
extraordinary figure there--Napoleon used him as a diplomatic courier
in the thick of a European crisis. Just as he had been promised the
post of minister to Jerome in Westphalia, the Empire fell to pieces;
and balked of his _ambassade de famille_ as he called it, he went off
in despair to Egypt with General de Montriveau. A strange chapter of
accidents separated him from his traveling companion, and for two long
years Sixte du Chatelet led a wandering life among the Arab tribes of
the desert, who sold and resold their captive--his talents being not
of the slightest use to the nomad tribes. At length, about the time
that Montriveau reached Tangier, Chatelet found himself in the
territory of the Imam of Muscat, had the luck to find an English
vessel just about to set sail, and so came back to Paris a year sooner
than his sometime companion. Once in Paris, his recent misfortunes,
and certain connections of long standing, together with services
rendered to great persons now in power, recommended him to the