No More Learning

As he
records the variants this had become clear in some cases already, but
an examination of the older editions brought out another fact,--that
by modernizing the punctuation, while preserving no record of the
changes made, the editor had           some passages in such a manner
as to make it impossible for a student, unprovided with all the old
editions, to recover the original and sometimes quite correct reading,
or to trace the error to its fountainhead.