It holds most knowledge that has ever been said.
But is not the brain, is not the head.
To feathers and their masters, it's both bane and boon.
One empty, and one full.
At the end of my yard there is a vat,
four-and-twenty ladies dancing in that;
Some in green gowns, and some with blue hat;
He is a wise man who can tell me that.
Select a pack of riddles and try to solve it in an interesting way.
This riddle appears in the following downloadable PDF files: