in the air. He was not surprised when the man failed to catch it. He heard it, whatever it was, strike the sidewalk, clicking metallically.
The man dropped to his knees and with wide gestures searched the flagging and the gutter. After a moment the chauffeur exclaimed—angrily, Garth fancied—then descended from his seat and joined the hunt.
Garth, speculating on this unconventional performance, stepped casually into an areaway, as if, indeed, it was his destination. From this shelter he observed the outcome.
The chauffeur picked up something which he thrust into the other's hand. After glancing quickly around he sprang to his seat while the man in evening clothes straightened, returned to the limousine, and closed the door. The car rolled almost silently up the street.
What, Garth questioned, had been left with such care on the sidewalk in front of the corner house? What object, probably similar, had occasioned the search?
When the car was nearly opposite him the man inside tapped on the pane. On a subdued note the chauffeur exclaimed again, then pulled the car to the curb and stopped it.
Once more the well-dressed man left the limousine and crossed the sidewalk. For the second time he bent and placed something carefully on the ground. It lay within Garth's reach, but just outside his line of vision. In fact, Garth could have grasped the
