Despite the assistant's statement that no dog had been in the museum, Jones glanced nervously at the three small windows of the basement workroom—narrow, horizontal rectangles close to the grass-grown pavement, with grimy panes that stared repulsively and incuriously like the eyes of dead fish. To their left a worn flight of stairs led to an opaque and heavily bolted door. Some impulse urged him to crouch low on the damp, broken cobblestones and peer in, on the chance that the thick green shades, worked by long cords that hung down to a reachable level, might not be drawn. The outer surfaces were thick with dirt, but as he rubbed them with his handkerchief he saw there was no obscuring curtain in the way of his vision.