"There were five things I had to get, and I have found four of them.

I have the three hairs in the tip of a Woozy's tail, a six-leaved clover, a gill of water from a dark well and a drop of oil from a live man's body.

The last thing is the easiest of all to get, and I'm sure that my dear Unc Nunkie--and good Margolotte, as well--will soon be restored to life." The Munchkin boy said this with much pride and pleasure.
"Good!" exclaimed the Tin Woodman; "I congratulate you.

But what is the fifth and last thing you need, in order to complete the magic charm ?" "The left wing of a yellow butterfly," said Ojo.

"In this yellow country, and with your kind assistance, that ought to be very easy to find." The Tin Woodman stared at him in amazement.
"Surely you are joking!" he said.
"No," replied Ojo, much surprised; "I am in earnest." "But do you think for a moment that I would permit you, or anyone else, to pull the left wing from a yellow butterfly ?" demanded the Tin Woodman sternly.
"Why not, sir ?" "Why not?
You ask me why not?
It would be cruel--one of the most cruel and heartless deeds I ever heard of," asserted the Tin Woodman.