Then the doctor locked himself in the library once more, and by the clouds of smoke which rolled down past the windows from the chimney it was known that he had lighted the fire. Later, after a great rustling of newspapers, that odd wrench and creaking were heard again; followed by a thumping which none of the eavesdroppers liked. Thereafter two suppressed cries of Willett's were heard, and hard upon these came a swishing rustle of indefinable hatefulness. Finally the smoke that the wind beat down from the chimney grew very dark and acrid, and everyone wished that the weather had spared them this choking and venomous inundation of peculiar fumes. Mr. Ward's head reeled, and the servants all clustered together in a knot to watch the horrible black smoke swoop down. After an age of waiting the vapours seemed to lighten, and half-formless sounds of scraping, sweeping, and other minor operations were heard behind the bolted door. And at last, after the slamming of some cupboard within, Willett made his appearance, sad, pale and haggard, and bearing the cloth-draped basket he had taken from the upstairs laboratory. He had left the window open, and into that once accursed room was pouring a wealth of pure, wholesome air to mix with a queer new smell of disinfectants. The ancient overmantel still lingered; but it seemed robbed of malignity now, and rose as calm and stately in its white panelling as if it had never borne the picture of Joseph Curwen. Night was coming on, yet this time its shadows held no latent fright, but only a gentle melancholy. Of what he had done the doctor would never speak. To Mr. Ward he said, "I can answer no questions, but I will say that there are different kinds of magic. I have made a great purgation. Those in this house will sleep the better for it."