_Lady Nevell's Music-book_ (Vol. vii., p. 59.).--To transpose the six-line staves of old music into the five-line staves of modern notation, it is only necessary to treat the lowest line of the treble, and the highest line of the bass, as ledger lines. The five remaining will correspond with the five now in use. I should feel greatly obliged to your correspondent L. B. L. for a sight of his Virginal Book, as it appears to be an exact transcript of the one in DR. RIMBAULT'S possession. WM. CHAPPELL. 201. Regent Street. _Tuch_ (Vol. vii., p. 82.).--ALPHAGE suggests that the "touchstone" had its name because "a musical sound may be produced by touching it {188} sharply with a stick." I think this is an error, and that it owes its name to its use in the assay of gold and silver. We find this application of it described in a work (now scarce) published in 1677, under the title of _A Touchstone for Gold and Silver Wares_. The author, after describing the qualities of a good touchstone, observes (p. 36.): "The way to make a true touch on the touch-stone is thus: When your touch-stone is very clean ... your silver being filed ... rub it steadily, and very hard, on the stone ... until the place of the stone whereon you rub be like the metal itself ... wet all the toucht places with your tongue, and it will show itself in its own countenance." And that the touchstone was used in this connexion at a much earlier period is obvious from the language of the ancient statutes. The 28 Edward I., stat. 3. cap. 20., requires all gold and silver wares to be "of good and true allay, that is to say, gold of a certain _touch_." And the word occurs in the same sense in other statutes. A. R. Birmingham. The error of Coleridge, alluded to by your correspondent ALPHAGE, is certainly not a little singular, especially as the word, in the sense of stone or marble, occurs in Ben Jonson, Drayton, and Sir John Harrington, and there is a good article on the word in Nares's _Glossary_. I must, however, altogether dissent from your correspondent's statement that the reason for the name of Touchstone is, that a musical sound may be produced by touching it sharply with a stick, and agree with Nares that it obtained its name from being used as a test for gold. See a very interesting article on Assay Marks by Mr. Octavius Morgan (_Archæological Journal_, ix. 127.), from which it appears that, for the trial of gold, touch-needles were applied to the touchstone. THOMPSON COOPER. Cambridge. _Eva, Princess of Leinster_ (Vol. vi., p. 388.).--O'Haloran, in his _History of Ireland_, says: In 1168, Dermot Mac Murchad, King of Leinster, having carried away Dearbhorgie, wife of O'Ruark, prince of Breffin, was driven from his kingdom by the husband, assisted by the lady's father, the King of Meath.