In the early evening time Dr. Kemp was sitting in his study in the belvedere on the hill overlooking Burdock. It was a pleasant little room, with three windows--north, west, and south--and bookshelves covered with books and scientific publications, and a broad writing-table, and, under the north window, a microscope, glass slips, minute instruments, some cultures, and scattered bottles of reagents. Dr. Kemp's solar lamp was lit, albeit the sky was still bright with the sunset light, and his blinds were up because there was no offence of peering outsiders to require them pulled down. Dr. Kemp was a tall and slender young man, with flaxen hair and a moustache almost white, and the work he was upon would earn him, he hoped, the fellowship of the Royal Society, so highly did he think of it.

And his eye, presently wandering from his work, caught the sunset blazing at the back of the hill that is over against his own. For a minute perhaps he sat, pen in mouth, admiring the rich golden colour above the crest, and then his attention was attracted by the little figure of a man, inky black, running over the hill-brow towards him. He was a shortish little man, and he wore a high hat, and he was running so fast that his legs verily twinkled.

"Another of those fools," said Dr. Kemp. "Like that ass who ran into me this morning round a corner, with the ''Visible Man a-coming, sir!' I can't imagine what possess people. One might think we were in the thirteenth century."

He got up, went to the window, and stared at the dusky hillside, and the dark little figure tearing down it. "He seems in a confounded hurry," said Dr. Kemp, "but he doesn't seem to be getting on. If his pockets were full of lead, he couldn't run heavier."

"............