As the colors sped upward and broke into the wind, his heart almost stopped beating from excitement.

Now they were half way up to the masthead and no one had seen them. The second mate still paced the bridge with his back to him. He glanced at the captain's cabin. No one appeared from there.

"I shall get them up," he whispered to himself through his tightly shut teeth, "but will they be read?"

Now they were chock with the pulley block and he made the ends of the halliards fast to the cleat and stood back to view his work. It seemed scarcely possible that they should not be seen and read by the passing steamer which was now so close that he could almost make out her colors with the naked eye.

With a feeling of triumph he looked aloft at the flags that, aided by a friendly breeze and the motion of the steamer, were fluttering out straight from the masthead. As he dropped his eyes from aloft he started back with a slight cry of fear and surprise.

The head of Suarez, the mate, appeared above an after companionway, his eyes flashing with anger. He rushed at the boy like an enraged animal, but Harry, determined to protect his signal as long as possible, stepped to the mast and took a capstan bar from its place at the base and stood defiantly awaiting the onslaught of the mate, who rushed upon him regardless of his threatening attitude. Before Harry knew what had happened the bar flew out of his hands, and he lay sprawling on the deck from a blow from the open hand of the mate.

Suarez paid no further attention to him, but seizing the halliards hauled down the signal. The scuffling of feet and the fall of the heavy capstan bar caused the second mate to turn quickly, and at the same moment the captain's door opened and he stepped out on the deck. His face flushed with anger as he saw the signal-flags, and then he turned quickly to the other vessel.

As he did so, Harry, whose eyes followed his, saw what he believed to be an answering signal, creep up the mast of the passing steamer. Suarez saw it, too, for he turned to Harry with an ugly look in his eyes.

"The mischief is done, you young devil," he said.

"I hope so," answered Harry, quietly rubbing the arm on which he had fallen. "Your hand is heavy, Suarez."