"The letters were all typewritten on a machine belonging to a public stenographer whom the girls knew. Jane Ford would stop in at this woman's place late in the afternoon and asking permission to use one of the machines would type the threatening letters. The paper she used was procured especially for her by her sister at a stationery store downtown. "The seal, a curious thing, had belonged to the girls' father, and she conceived the idea of signing the letters with it to add to the grimness of her threats. As a matter of fact, I do not think she ever had the least intention of carrying them out. It was to be solely a campaign of fear. She probably thought that she could so frighten you, Miss Morton, that your health would be broken down, and your work consequently interfered with to such an extent that you would lose your position. As I say, I think she is mentally somewhat unbalanced. I cannot account for some of her actions, otherwise. "The mailing of the first letter, the telephone messages, were comparatively simple. It was the delivery of those at the apartment that taxed her ingenuity. Yet the method was simple enough. "The girls' father, I am told, had been an animal trainer in a circus, and one of his bequests to his daughters was a pet monkey named Jack, that had been taught to do all sorts of tricks. The girls brought this monkey to New York with them after their father's death. When the question arose of delivering the letters in your room, Miss Morton, she decided to make use of the animal. "Creeping out of Marcia Ford's bedroom to the roof of the back building, and taking the monkey with her, she crossed the roof of the second house and reached the wall of the apartment. From here she was in a position to reach either of your bedroom windows in the following manner. "The monkey was led by means of a long, thin rope, attached to a sort of harness about his neck and shoulders. By going to the rear edge of the back building they could readily swing him over to the fire-escape, while by ascending to the top of the attic roof overlooking the court, they could in the same way enable him to reach the other window. The monkey had been trained to carry objects in his mouth. This accounts for the row of indentations on the letters found in your room. I had supposed they came from some mechanical device, fastened to the end of a long pole, but as a matter of fact, they were made by the monkey's teeth. "The animal being light in weight, and the pads of his feet being, of course, soft, no traces of his presence were left on the newly painted surface of the fire-escape. The handkerchief that I found there had been knotted about his neck as the collar to which the rope was fastened had seemed a bit weak. In some way it became detached, probably when the girls jerked on the cord to summon him back after he had completed his task.