g on at full speed," reported the wireless operator.
"She'll be with us in about an hour, now. And I guess it's time, too," he
added in a low voice.

"Why?" asked Russ, when the girls had passed on.

"Because I believe the fire is gaining. I think it's in one of the coal
bunkers now, and that means it will burn steadily, and may eat through
the side of the ship."

The operator turned to his apparatus, for he had been told to keep in
constant communication with the oncoming rescue ship.

As Paul rejoined the girls, there sounded through the _Tarsus_ a dull
explosion, that made the ship tremble.

The commander was hurrying along the deck. Many of the passengers, who
had gone below to pack their belongings in anticipation of being
transferred, now came rushing out of their staterooms.

"What was it?"

"Are we going to blow up?"

"Is the ship sinking?"

"Don't be alarmed!" Captain Falcon exhorted them, but, even as he spoke,
there came a second dull rumbling, a trembling of the vessel, and another
explosion, louder than the first. There were screams from frightened
women and children, and a number of men passengers made a rush for the
boats, as the sailors had done before.

CHAPTER VII

IN PORT

"Stand back!" cried Captain Falcon, and again his hand went to his pocket
as though to draw a weapon. "Stand back! The same rule applies to you men
passengers as to the sailors. Women and children first! Do you hear?
Stand back!"

The rush was halted almost before it started. Then Mr. Switzer, who had
taken no part in it, said slowly:

"Dot is right. Gentlemen, ve are forgetting ourselves!"

"And it took him--above everyone else--to remind them of it," said Mr.
DeVere in a low voice. He had remained by the side of his daughters.

"Mr. Switzer is a bigger man than any of us thought," murmured Ruth. "Oh,
Daddy, is the boat going to sink?"

"We are going to be blown up!" exclaimed a big man, who, with others, had
made a half start for the boat, and then had hung back shamefacedly.

"If you say that again!" cried Paul, in a fierce whisper, "I'll throw you
overboard! This is no time to start a panic!"

The man slunk away. There came another explosion, not so loud as the
first, but enough to cause the men to start involuntarily, and to bring
frantic screams from the women passengers.

"What is that, Captain?" asked Mr. Pertell.

"Nothing to be alarmed about," was the calm answer.

"They sound alarming