"Nevertheless," he said, "had I my lady-love in this house, I would prefer that she knew not the secret of this window. But why all these precautions, Baron? They have not been put here because I am your visitor, for I think the grate moved rustily upon its hinges."

"No, the window has been as you see it these many years. I do not know its history. I suspect that my father found it convenient sometimes to slip out of Treves without much ado, for I know he felt safer on occasion in our strong Rhine castle than in this sometimes turbulent city. I have not interfered with the device, although I have seldom had need of it. I even keep up an old custom of our house, disliking change as all my forefathers have done, although I have never profited by it."

"What old custom?"

"The stationing of a sentinel night and day in a small room above where we stand. When he sees a light in yonder house by the river, or hears by night or day the cry of a waterfowl that frequents the upper Rhine, but which is unknown on the Moselle, he instantly comes down to this room, throws open the casement and flings out the rope. Although as I said, I have never had actual need of this method of exit or entrance, I have, nevertheless, tested the vigilance of my servants, and have climbed in hand over hand."

"Another question, Baron, and forgive my curiosity. How is it that you, a noble and a householder in Treves, enter the gates as a silk merchant unchallenged? Surely the Archbishop keeps slack guard."

"Although I know many of those about the Archbishop's Court, I am myself practically unknown. I attend once a year, perhaps, a formal function in Treves, but it is generally supposed I am in my castle on the Rhine, or at Frankfort, which is indeed the case. My house attracts no attention, for it has belonged to my family for centuries. And now, your Majesty, the room adjoining this, and connected with it, I design for your sleeping apartment, and I trust you will rest well there."

"One more question, Siegfried, in punishment for the title you have bestowed upon me; that house by the river—is it also yours?"

"Yes. A small place, but in some respects the complement of this. I keep there a fast horse, and a swift skiff, so that the man in a hurry, of whom I spoke, may betake himself either to the road or the river as best falls in with his humour or necessity."

"By the gods, Baron, and should we find it necessary to enter into a conspiracy against the great Arnold von Isenberg, we are reasonably well provided for any emergency."

"It is said there is nothing entirely useless in this world, Rodolph," answered the other, drily.