"I'll look after them," promised the keeper of the hippopotamus, who was grateful to Joe for having stopped the big beast from running into danger.

Thus Joe's act was added to. But he was not done yet—not satisfied. He wanted something different.

For a week the show traveled on. Joe and Helen wrote to Benny, and in reply received a short letter from him. He said they were getting ready to operate on him, though they would have to wait for a favorable opportunity.

"It is the only chance, they say," wrote Benny, "of preventing me from becoming deaf and dumb. But oh, how I dread it! And my mother!—I don't know how to tell her."

"Poor boy!" murmured Helen. "He certainly is in trouble. I wish we could be with him—but we can't."

For the show must go on, and Joe and Helen had to go with it.

Joe's act in the tank made a favorable impression all along the route. He was gaining a reputation, and Jim Tracy ordered some new show bills featuring him. Joe also bought a new suit, red and in some other respects different from Benny's old one.

"Oh, what a pretty color!" Helen exclaimed when she saw Joe's new under-water suit. "It just matches the goldfish."

"So it does," Joe agreed. "I never thought of that when I sent for it."

It did make an effective picture in the tank, and at first glance Joe appeared to be a big goldfish himself, so perfect was the coloring of his rubber garment.