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.
What types of words are these: madam, civic, eye, level?
Until I am measured I am not known, Yet how you miss me when I have flown.
I am seen in the water. If seen in the sky, I am in the rainbow, a jay's feather, and lapis lazuli.
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.
What never gets any wetter no matter how hard it rains?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?