One evening at the _Jardin Bullier_ one young fellow, utterly and entirely brainless, evidently the fop of his quarter, appeared dressed, to his taste, gorgeously. He wore a pearl gray suit; the bottoms of his trowsers were so absurdly wide that they covered his boot; his coat sleeves were so wide that they made a fair match for his trowsers; his cuffs (with a showy sham button) came down to his knuckles; his shirt collar was cut half way down his breast, and his hat was the most painful in shine that I had ever seen. He was, in short, gotten up regardless of expense, and entirely for effect. This young fellow offered some slight indignity to a girl with whom he was dancing. Very promptly she cried out, and in an instant the dancing was suspended. "Put him out!" cried those near them, who comprehended the matter. "Put him out! Put him out!" was echoed from one side to the other of the vast hall, and a rush of excited Frenchmen was made toward that part of the room. The fellow attempted some sort of an explanation, but it was of no avail. Out he went, guilty or not. In that place everybody must be like Cæsar's wife--above suspicion. Out he went, and the dancing was resumed with redoubled fury. A duty discharged, they might abandon themselves to pleasure with increased zest. All the difference was those who had yelled "Put him out" the loudest, kicked a trifle higher than before, and went crab-like sideways with more extraordinary contortions. Tibbitts and the Professor had an awkward experience the first night they were in Paris. The Professor had received a letter from Tibbitts' father requesting him to look after the young man, and see that he attended to legitimate matters and be not carried away with the frivolities of Parisian life, which destroy so many inexperienced youth. In fact, he gave the Professor authority in the matter, and made him a sort of a guardian over him. After dinner the Professor showed Tibbitts the letter and assumed control at once. "To-night, Lemuel, I have to meet the American delegates to the International Science Congress, and I cannot be with you. But I must exact a promise from you that you will not go to any of those public balls, such as the Mabille. I have no objection to your visiting the Opera, for I understand the building itself is a study, and it is perhaps well that you should hear and enjoy the music of the masters. This is as far as I can permit you to go. You promise?" "Certainly," replied Tibbitts, "though it is not necessary. Without a promise I should not go to those wicked places." [Illustration: THE MEETING OF TIBBITTS AND THE PROFESSOR.] Scene the second: The Jardin Mabille--music, lights, gaily dressed women, little tables, wine, and all that sort of thing.