Rats love sweet, soft, melodious tones, and a great many experiments have been made in taming rats thereby, but only with indifferent success upon the sharp-witted rodents, in spite of all the pretty stories to the contrary in the reading-books. So high is the rat's musical understanding rated, that there is a proverb among the people that rats immediately disappear from the house as soon as a young lady begins taking lessons on the piano. A mouth-harmonica seems to be the rat's favorite musical instrument, and its gentle strains exert the most power over him, far more than the tones of any other instrument. If the music be soft, mild, and pathetic, the rat will listen and come very near, for he is a very susceptible sort of beast, and, if closely observed, tears of sorrow, or of sad and tender reminiscence, will be seen coursing slowly down his cheeks. But if, on the contrary, the music be harsh, shrill, and discordant, such as would most likely be ground out by beginners, or if it proceed from a brass instrument, or drum, or if it be occasioned by a shotgun report, or explosion, it may drive the impressionable animals from places where they had been used to frequent. If, however, one is unsuccessful in trying to scare off the rats by noise at the first inning, a repetition will be of no avail. The rat will take up his nest in all and any out-of-the way places, as he shuns the light and lives wholly in the dark and gloom. This is the cause of his poor sight; he can hardly see at all in the daytime, and in the night a little better. If you should meet with a rat by day, looking square in your face, depend upon it he isn't able to see you at all, in spite of the pretty gleam in his black eyes. His minutely acute ears, however, do him good service instead of eyes, so that he has very little occasion to miss the latter at all. The rat is generally very timid, and extremely nervous, the slightest disturbance repelling him and making him shrink into obscurity and shadow. Yet it is his great peculiarity that he can adapt himself to any extremity of climate or description of place; he is found making himself at home in hotels, factories, public gardens, and other haunts of loud and constant noise, bustle, and confusion. XIV.--RATS AS MORALISTS.