"Find out?" cried Stanton hotly. "Find out? I'd like to know how anybody is going to find out, when the only given address is a private post-office box, and as far as I know there's no sex to a post-office box. Find out? Why, man, that basket over there is full of my letters returned to me because I tried to 'find out'. The first time I asked, they answered me with just a teasing, snubbing telegram, but ever since then they've simply sent back my questions with a stern printed slip announcing, "Your letter of ---- is hereby returned to you. Kindly allow us to call your attention to the fact that we are not running a correspondence bureau. Our circular distinctly states, etc." "Sent you a printed slip?" cried the Doctor scoffingly. "The love-letter business must be thriving. Very evidently you are by no means the only importunate subscriber." "Oh, Thunder!" growled Stanton. The idea seemed to be new to him and not altogether to his taste. Then suddenly his face began to brighten. "No, I'm lying," he said. "No, they haven't always sent me a printed slip. It was only yesterday that they sent me a rather real sort of letter. You see," he explained, "I got pretty mad at last and I wrote them frankly and told them that I didn't give a darn who 'Molly' was, but simply wanted to know _what_ she was. I told them that it was just gratitude on my part, the most formal, impersonal sort of gratitude--a perfectly plausible desire to say 'thank you' to some one who had been awfully decent to me these past few weeks. I said right out that if 'she' was a boy, why we'd surely have to go fishing together in the spring, and if 'she' was an old man, the very least I could do would be to endow her with tobacco, and if 'she' was an old lady, why I'd simply be obliged to drop in now and then of a rainy evening and hold her knitting for her." "And if 'she' were a girl?" probed the Doctor. Stanton's mouth began to twitch. "Then Heaven help me!" he laughed. "Well, what answer did you get?" persisted the Doctor. "What do you call a realish sort of letter?" With palpable reluctance Stanton drew a gray envelope out of the cuff of his wrapper. "I suppose you might as well see the whole business," he admitted consciously. There was no special diffidence in the Doctor's manner this time. His clutch on the letter was distinctly inquisitive, and he read out the opening sentences with almost rhetorical effect.