Answer:
Five hundred begins it, five hundred ends it. Five in the middle is seen. First of all figures, the first of all letters. Take up their stations between. Join all together, and then you will bring before you the name of an eminent king.
I am whole but incomplete. I have no eyes, yet I see. You can see, and see right through me. My largest part is one fourth of what I once was.
What doesn't get any wetter, no matter how much rain falls on it?
What English word retains the same pronunciation, even after you take away four of its five letters?
The more holes you cover the lower it goes.
What never gets any wetter no matter how hard it rains?