He was beside her now, his hands pressed upon her shoulders, his face flushed.
"Box number four-two-eight!" He laughed out hysterically in his excitement. "John Johansson—box number four-two-eight! And like a fool I never thought of it! Don't you see? Don't you know now yourself? The underground post office!"
She stood up, clinging to him; a wild relief, that was based on her confidence in him, in her eyes and face, even while she shook her head.
"No," she said frantically. "No—I do not know. Tell me, Jimmie! Tell me quickly! You mean at Makoff's?"
"No! Not Makoff's—at Spider Jack's, on Thompson Street!"—he was clipping off his words, still holding her tightly by the shoulders, still staring into her eyes. "You know Spider Jack! Jack's little novelty store! Ah, you have not learned all of the underworld yet! Spider Jack is the craftiest 'fence' in the Bad Lands—and Makoff is his partner. Spider buys the crooks' stuff, and Makoff disposes of it through the pawnshop—it's only a step through the connecting back yard from one to the other, and"
"Yes—but," she interrupted feverishly, "the package—you said"
"Wait!" Jimmie Dale cried. "I'm coming to that! If Travers stood in with Makoff, he stood in with Spider Jack. For years Spider has been a sort of clearing house for the underworld—for years he has conducted, and profitably, too, his underground post office. Crooks from all over the country, let alone those in New York, communicate with each other through Spider Jack. These, for a fee, are registered at Spider's, and given a number—a box number he calls it, though, of course, there are no actual boxes. Letters come by mail addressed to him—the sealed envelope within containing the actually intended recipient's name. These Spider either forwards, or delivers in person when they are called for. Dozens of crooks, too, unwilling, perhaps, to dispose of small ill-gotten articles at ruinous 'fence' prices, and finding it unhealthy for the moment to keep them in their
