ut for the earth and at once was in
the midst of a big city.

His own dwelling was so quiet and peaceful that the roaring noise of
the town startled him. His nerves were so shocked that before he had
looked around three minutes he decided to give up the adventure, and
instantly returned home.

This satisfied for a time his desire to visit the earth cities, but
soon the monotony of his existence again made him restless and gave
him another thought. At night the people slept and the cities would
be quiet. He would visit them at night.

So at the proper time Popopo transported himself in a jiffy to a
great city, where he began wandering about the streets. Everyone was
in bed. No wagons rattled along the pavements; no throngs of busy
men shouted and halloaed. Even the policemen slumbered slyly and
there happened to be no prowling thieves abroad.

His nerves being soothed by the stillness, Popopo began to enjoy
himself. He entered many of the houses and examined their rooms with
much curiosity. Locks and bolts made no difference to a knook, and
he saw as well in darkness as in daylight.

After a time he strolled into the business portion of the city.
Stores are unknown among the immortals, who have no need of money or
of barter and exchange; so Popopo was greatly interested by the
novel sight of so many collections of goods and merchandise.

During his wanderings he entered a millinery shop, and was surprised
to see within a large glass case a great number of women's hats,
each bearing in one position or another a stuffed bird. Indeed, some
of the most elaborate hats had two or three birds upon them.

Now knooks are the especial guardians of birds, and love them
dearly. To see so many of his little friends shut up in a glass case
annoyed and grieved Popopo, who had no idea they had purposely been
placed upon the hats by the milliner. So he slid back one of the
doors of the case, gave the little chirruping whistle of the knooks
that all birds know well, and called:

"Come, friends; the door is open--fly out!"

Popopo did not know the birds were stuffed; but, stuffed or not,
every bird is bound to obey a knook's whistle and a knook's call. So
they left the hats, flew out of the case and began fluttering about
the room.

"Poor dears!" said the kind-hearted knook, "you long to be in the
fields and forests again."

Then he opened the outer door for them and cried: "Off with you! Fly
away, my beauties, and be happy