Time when Herodotus wrote

The passage quoted by your correspondent A.W.H. affords, I think, a reasonable argument to prove that Herodotus did not commence his work until an advanced age; most probably between the ages of seventy and seventy-seven years. Moreover, there are various other reasons to justify the same conclusion; all which A.W.H. will find stated in Dr. Smith's *Dictionary of Greek and Roman Biography and Mythology*, vol. ii. I believe A.W.H. is correct in his supposition that the passage has not been noticed before.