J. J. SYLVESTER, LL.D., F.R.S.

Of the Institute of France, the Royal Academies of Science of Berlin, Göttingen.

Naples, Milan, &c. &c. &c.;

Examiner in Mathematics to the University of London.

UNUS!T!

ΤΟ

MATTHEW ARNOLD, ESQ., D.C.L.

SOMEWHILE PROFESSOR OF POETRY AT THE UNIVERSITY OF OXFORD,

'Non ante volgatas per artes
Verba loquor socianda chordis.'
HOR. Car. iv. 9.

By methods ne'er promulged before,
Fit speech o'er lyric chords I pour.

Παλαιὰ παροιμία ὅτι χαλεπὰ τὰ καλά ἐστιν ὅπῃ ἔχει μαθεῖν.

PLATO, Socrat. in Cratylus.

'Untwisting all the chains that tie

The hidden soul of harmony.'

MILTON, L'Allegro.