A heightened color spread slowly over the face of his friend. "Enough," he exclaimed, vexed; "if I have thought too little of my future, you should not reproach me for it. It has perhaps been too great a pleasure to me to be your companion and the confidant of your successful labors. I also, from my intercourse with you, have enjoyed that pleasure which an intellectual man bestows upon all who participate in his creations. Good night." The Professor approached him, and seizing both his hands, exclaimed, "Stay! Are you angry with me?" "No," answered Fritz, "but I am going;" and he closed the door gently. The Professor paced up and down excitedly, reproaching himself for his vehemence. At length he violently threw the books which had served as a signal back on the shelf, and again seated himself at his desk. Gabriel lighted the Doctor down the stairs, opened the door, and shook his head when he heard his "Good night" curtly answered. He extinguished the light and listened at his master's door. When he heard the Professor's steps, he determined to refresh himself by the mild evening air, and descended into the little garden. There he met Mr. Hummel, who was walking under the Professor's windows. Mr. Hummel was a broad-shouldered gentleman, with a large head and a determined face, portly and well-preserved, of the honest old Saxon type. He smoked a long pipe, with a huge mouth-piece, which was divided into a number of capacious compartments. "A fine evening, Gabriel," began Mr. Hummel, "a good season; what a harvest we shall have!" He nudged the servant. "Has anything happened up there? The window is open," he concluded significantly, and disapprovingly shook his head. "He has closed the window again," answered Gabriel, evasively. "The bats and the moths become troublesome, and when he argues with the Doctor they both grow so loud that people in the street stop and listen." "Circumspection is always wise," said Mr. Hummel; "but what was the matter? The Doctor is the son of the man over yonder, and you know my opinion of them, Gabriel--I do not trust them. I do not wish to injure any one, but I have my views concerning them." "What it was about," answered Gabriel, "I did not hear; but I can tell you this much, there was much talk about the ancient Romans. Look you, Mr. Hummel, if the old Romans were among us now, much would be different. They were dare-devils; they knew how to forage; they knew how to carry on war; they conquered everywhere." "You speak like an incendiary," said Mr. Hummel, with displeasure.