"We have some very large mosquitoes here, which sing as beautifully as song birds," replied the Tin Woodman. "But they never bite or annoy our people, because they are well fed and taken care of. The reason they bite people in your country is because they are hungry—poor things!"

"Yes," agreed Aunt Em; "they're hungry, all right. An' they ain't very particular who they feed on. I'm glad you've got the 'skeeters educated in Oz."

That evening after dinner they were entertained by the Emperor's Tin Cornet Band, which played for them several sweet melodies. Also the Wizard did a few sleight–of–hand tricks to amuse the company; after which they all retired to their cozy tin bedrooms and slept soundly until morning.

After breakfast Dorothy said to the Tin Woodman:

"If you'll tell us which way to go we'll visit the Scarecrow on our way home."

"I will go with you, and show you the way," replied the Emperor; "for I must journey to–day to the Emerald City."

He looked so anxious, as he said this, that the little girl asked:

"There isn't anything wrong with Ozma, is there?"

"Not yet," said he; "but I'm afraid the time has come when I must tell you some very bad news, little friend."

"Oh, what is it?" cried Dorothy.

"Do you remember the Nome King?" asked the Tin Woodman.

"I remember him very well," she replied.

"The Nome King has not a kind heart," said the Emperor, sadly, "and he has been harboring wicked thoughts of revenge, because we once defeated him and liberated his slaves and you took away his Magic Belt. So he has ordered his Nomes to dig a long tunnel underneath the deadly desert, so that he may march his hosts right into the Emerald City. When he gets there he intends to destroy our beautiful country."

Dorothy was much surprised to hear this.

"How did Ozma find out about the tunnel?" she asked.

"She saw it in her Magic Picture."

"Of course," said Dorothy; "I might have known that. And what is she going to do?"

"I cannot tell," was the reply.

"Pooh!" cried the Yellow Hen. "We're not afraid of the Nomes. If we roll a few of our eggs down the tunnel they'll run away back home as fast as they can go."

"Why, that's true enough!" exclaimed Dorothy. "The Scarecrow once conquered all the Nome King's army with some of Billina's eggs."

"But you do not understand all of the dreadful plot," continued the Tin Woodman. "The Nome King is clever, and he knows his Nomes would run from eggs; so he has bargained with many terrible creatures to help him. These evil spirits are not afraid of eggs or anything else, and they are very powerful. So the Nome King will send them through the tunnel first, to conquer and destroy, and then the Nomes will follow after to get their share of the plunder and slaves."