His habitual melancholy was changing day by day into something more sinister. There were moments when he would desecrate the crumbling and mournful mask of his face with a smile more horrible than the darkest lineaments of pain. Across the stoniness of his eyes a strange light would pass for a moment, as though the moon were flaring on the gristle, and his lips would open and the gash of his mouth would widen in a dead, climbing curve