The basis of all texts of Shakespeare must be that of the earliest
Edition of the collected plays, the Folio of 1623, which, for more easy
reference, we have designated F1[2]. This we have mainly adopted, unless
there exists an earlier edition in quarto, as is the case in more than
one half of the thirty-six plays. When the first Folio is corrupt, we
have allowed some authority to the emendations of F2 above subsequent
conjecture, and secondarily to F3 and F4; but a reference to our notes
will show that the authority even of F2 in correcting is very small.
Where we have Quartos of authority, their variations from F1 have been
generally accepted, except where they are manifest errors, and where the
text of the entire passage seems to be of an inferior recension to that
of the Folio. To show that the later Folios only corrected the first by
conjecture, we may instance two lines in _Midsummer Night's Dream_:
Give me your neif, Mounsieur Mustard Seed. IV. 1.
'Neif,' which is spelt 'niefe' in Qq F1, becomes 'newfe' in F2, 'newse'
and 'news' in F3 F4.
And finds his trusty Thisby's mantle slain. V. 1.