or
him to resist. That was why he sought out the diamond makers, and
learned the secret of Phantom Mountain. And when he went to the
Caves of Ice, and there saw his airship wrecked, Tom was well-nigh
discouraged, But he managed to get back to civilization, and later
undertook a journey to elephant land, with his powerful electric
rifle.

Marvelous adventures underground did Tom Swift have when he went
to the City of Gold, and I have set down some of them in the book
bearing the latter title. Later on he sought the platinum treasure
in his air glider. And when Tom was taken captive, in giant land,
only his speedy airship saved him from a hard fate.

By this time moving pictures were beginning to occupy a large
place in the scientific, as well as the amusement world, and Tom
invented a Wizard Camera which did excellent work. Then came the
need of a powerful light, to enable Uncle Sam's custom officers on
the border to detect the smugglers, and Tom was successful in
making his apparatus.

He thought he would take a rest after that, but with the opening
of the Panama Canal came the need of powerful guns to protect that
important waterway, and Tom made a Giant Cannon, which enabled the
longest shots on record to be fired.

Now, some months had passed, after the successful trial of the big
weapon, and Tom longed for new activities. He found them in the
idea of a photo telephone, and he and his father were just talking
of this when interrupted by the accident to the birdman on the
roof of the Swift home.

"Have you got that ladder, Rad?" cried the young inventor,
anxiously, as he saw the dangerous position of the man from the
airship.

"Yas, sah, Massa Tom! I'se a-camin' wif it!"

"And where's Koku? We'll need him!"

"He's a-camin', too!"

"Here Koku!" exclaimed a deep voice, and a big man came running
around the corner of the house. "What is it, Master?"

"We must get him down, Koku!" said Tom, simply. "I will go up on
the roof. You had better come, too. Rad, go in the house and get a
mattress from the bed. Put it down on the ground where he's likely
to fall. Lively now!"

"Yas, sah, Massa Tom!"

"Me git my own ladder--dat one not strong 'nuff!" grunted Koku,
who did not speak very good English. He had a very strong ladder,
of his own make, built to hold his enormous bulk, and this he soon
brought and placed against the side of the house.

Meanwhile Tom and his father had raised the one Eradicate had
brou