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 city. He is continually doing good. You can be sure of him."

"What must I do?" Bessie demanded.

"He knows all about you," said Valeska. "The colonel has told him everything, and Astro, my friend, has agreed to help solve the problem. I know I can trust you, when I tell you this. I want you to see him and ask his advice."

"I will!" Bessie rose with determination. "I'll just leave it all to him. He can't make it any worse than to tell me that I'm not the colonel's daughter, and then that will settle it. Let's go and call on him now."

Astro looked up in surprise when he saw the two girls enter the studio. A secret glance from Valeska told him the truth. He nodded, and welcomed the visitor.

"I've told her everything," said Valeska. "She can be trusted. You will take my word for it, I know. And she's ready for the ophthalmoscope test."

"Is it really a proof?" Bessie asked timidly.

"My dear girl," said Astro, "if your optic disk shows itself to be the ordinary circle, nothing whatever will be proved, and the chances are equal as between you and Willie. If, on the contrary it appears like your father's—I mean the colonel's—it will be ten thousand to one that you are descended from him; that you are, in fact, his daughter. Now, Valeska, put down the lights and light the blue bulb."

The room became dim and full of shadows. The incandescent wire of the electric lamp showed a rich purple. Astro took up the instrument, placed it in