Thaddeus went mad in September after a visit to the well. He had gone with a pail and had come back empty-handed, shrieking and waving his arms, and sometimes lapsing into an inane titter or a whisper about "the moving colours down there." Two in one family was pretty bad, but Nahum was very brave about it. He let the boy run about for a week until he began stumbling and hurting himself, and then he shut him in an attic room across the hall from his mother's. The way they screamed at each other from behind their locked doors was very terrible, especially to little Merwin, who fancied they talked in some terrible language that was not of earth. Merwin was getting frightfully imaginative, and his restlessness was worse after the shutting away of the brother who had been his greatest playmate.