"But, father----" interposed the daughter.

"It matters not," continued the Proprietor, "it must be." He approached closer to her and spoke in a low tone: "They are two scholars and are crackbrained"--he pointed to his head. "What they imagine is madness, and I only give in to them in order to have peace in the future. Be cautious, Ilse; I do not know the people. I must go to the farm, but will tell the Inspector to remain near the house. They appear to me two honest fools, but the devil may trust."

"I have no fear, father," answered the daughter; "the house is full of people; we shall be able to manage."

"Take care that none of the servants are about, whilst the strangers are sounding the walls and measuring. For the rest, they do not look to me as if they would find much, even though all the walls were built up with books. But you must not allow them to break through or injure the walls."

"I understand, father," said the daughter. "Do they remain to dinner?"

"Yes, your duty will continue till evening. The housekeeper can superintend the dairy for you."

The friends heard fragments of the conversation through the door; after the first words of instruction they went quickly to the window, and talked aloud about the great accumulation of straw on the top of the barn, which, according to the Doctor, was a stork's nest, while the Professor maintained that storks did not build their nests so high. But intermingled with this talk the Professor said in a low tone: "It is very uncomfortable for us to continue in this humiliating position. But we can only convince the proprietor by our perseverance."

"Perhaps we may yet discover something," said the Doctor. "I have some experience in masonry. As a boy I found opportunity while our house was building, to obtain a fair degree of knowledge in statics and climbing rafters. It is well that the tyrant leaves us alone. Do you entertain the daughter, I will meanwhile sound the walls."

Whoever has followed an uncertain scent knows full well how difficult on a near approach are things that at a distance appeared easy. While at first the deceitful Goddess of Hope paints all favorable chances in bright colors, the very work of searching raises all possible doubts. The alluring picture fades, despondency and weariness cast their shadows across it; and what in the beginning was a happy venture becomes at last a mere effort of perseverance.

CHAPTER IV.