Note: The causes which produced it [the Septuagint], the
number and names of the translators, the times at which
different portions were translated, are all uncertain.
The only point in which all agree is that Alexandria
was the birthplace of the version. On one other point
there is a near agreement, namely, as to time, that the
version was made, or at least commenced, in the time of
the early Ptolemies, in the first half of the third
century b.c. --Dr. W. Smith (Bib. Dict.)
{Septuagint chronology}, the chronology founded upon the
dates of the Septuagint, which makes 1500 years more from
the creation to Abraham than the Hebrew Bible.