"I thought so," he said, looking at the address; "this is for you, von Mahl." He handed it to the youth, who tore open the envelope.

They crowded about him and read it over his shoulder:

"THIS IS THE FIRST WARNING OF THE AVENGER. SHAKE IN YEER SHOES. TREMBLE! Surround ye'sel' with guards and walls And hide behind the cannon balls, And dig ye'sel' into the earth. Ye'll yet regret yeer day of birth. For Tam the Scoot is on yeer track And soon yeer dome will start to crack!"

It was signed with a skull and cross-bones.

The young man looked bewildered from one to the other. Every face was straight.

"What—what is this?" he stammered; "is it not absurd? Is it not frivolous, Herr Captain?"

He laughed his high, shrill little laugh, but nobody uttered a sound.

"This is serious, of course, von Mahl," said Zeiglemann soberly. "Although this is your private quarrel, the squadron will do its best to save you."

"But, but this is stupid foolishness," said von Mahl as he savagely tore the note into little pieces and flung them down. "I will go after this fellow and kill him. I will deal with this Herr Tam."