It was at twenty past two that he arrived at Professor Goodman’s house. As he stepped out of the car a man walked quietly towards him, a man who stopped to watch the big box being carefully lowered to the ground. He stopped just long enough to say, “No one in the house except the servants,” and then he strolled on.
With great care the two men carried the box up the steps and, considering the contents were lumps of carboniferous quartz, the intense respect with which they handled it might have struck an onlooker as strange. But the parlourmaid, grown used through long experience to the sudden appearance of strange individuals at odd hours, merely led the way to the laboratory, and having remarked that the Professor might be back at three, or possibly not till six, according to whether he h
