In the dusk of an October evening, a sensible looking woman of forty came out through an oaken door to a broad landing on the first floor of an old English country-house. A braid of her hair had fallen forward as if she had been stooping over book or pen; and she stood for a moment to smooth it, and to gaze contemplatively - not in the least sentimentally - through the tall, narrow window. The sun was setting, but its glories were at the other side of the house; for this window looked eastward, where the landscape of sheepwalks and pasture land was sobering at the approach of darkness. The lady, like one to whom silence and quiet were luxuries, lingered on the landing for some time. Then she turned towards another door, on which was inscribed, in white letters, Class Room No. 6. Arrested by a whispering above, she paused in the doorway, and looked up the stairs along a broad smooth handrail that swept round in an unbroken curve at each landing, forming an inclined plane from the top to the bottom of the house.