“I’ll be glad to give you an affidavit. But I should explain that the ‘present’ and the donation were two distinctly separate affairs.”

“Then what became of the donation?” Katherine cried triumphantly.

“It was sent,” said the manager.

“Sent?”

“I sent it myself,” was the reply.

Katherine left St. Louis more puzzled than before. What had become of the check, if it had really been sent? Home again, she ransacked her father’s desk with his aid, and in a bottom drawer they found a heap of long-neglected mail.

Doctor West at first scratched his head in perplexity. “I remember now,” he said. “I never was much of a hand to keep up with my letters, and for the few days before that celebration I was so excited that I just threw everything——”

But Katherine had torn open an envelope and was holding in her hands a fifty dollar check from the Acme Filter Company.

“What was the date of your arrest?” she asked sharply. “The date Mr. Marcy gave you that money?”

“The fifteenth of May.”