railway carriage should be entirely unaffected,"
The explanation only brought uproarious merriment from Challenger. He laughed until everything in the room seemed to rattle and quiver.
"Our worthy Summerlee is, not for the first time, somewhat out of touch with the facts of the situation," said he at last, mopping his heated brow. "Now, gentlemen, I cannot make my point better than by detailing to you what I have myself done this morning. You will the more easily condone any mental aberration upon your own part when you realize that even I have had moments when my balance has been disturbed. We have had for some years in this household a housekeeper—one Sarah, with whose second name I have never attempted to burden my memory. She is a woman of a severe and forbidding aspect, prim and demure in her bearing, very impassive in her nature, and never known within
