Note 153 — LETTERS
Charles Lett Feltoe translation
It is not clear whether Dionysius actually alludes here to the well-protected harbours of Alexandria or (more loosely) to the Lake Mareotis: probably to the former, because the canal he refers to in the next sentence (though he calls it a river) was cut from the Nile into one of the harbours and passed at the back of the city between it and the Lake Mareotis.