scaffolding of the viaduct out over the back roof of the building, and this fact had impressed itself on Aubrey's observant eye the day before. The front of the drug store stood three storeys, but in the rear it dropped to two, with a flat roof over the hinder portion. Two windows looked out upon this roof. Weintraub's back yard opened onto the alley, but the gate, he found, was locked. The fence would not be hard to scale, but he hesitated to make so direct an approach.
He ascended the stairs of the "L" station, on the near side, and paying a nickel passed through a turnstile onto the platform. Waiting until just after a train had left, and the long, windy sweep of planking was solitary, he dropped onto the narrow footway that runs beside the track. This required watchful walking, for the charged third rail was very near, but hugging the outer side of the path he proceeded without trouble. Every fifteen feet or so a girder ran sideways from the track, resting upon an upright from the street below. The fourth of these overhung the back corner of Weintraub's house, and he crawled cautiously along it. People were passing on the pavement underneath, and he greatly feared being discovered. But he reached the end of the beam without mishap. From here a drop of about twelve feet would bring him onto Weintraub's
