Ye sweet and charming creatures, who from the age of nine even to the age of marriage too often are the torment of a mother even when she is not a coquette, is it by the privilege of your years or the instinct of your nature that your young ears catch the faint sound of a man’s voice through walls and doors, that your eyes are awake to everything, and that your young spirit busies itself in divining all, even the meaning of a word spoken in the air, even the meaning of your mother’s slightest gesture? There is something of gratitude, something in fact instinctive, in the predilection of fathers for their daughters and mothers for their sons. But the act of setting spies which are in some way inanimate is mere dotage, and nothing is easier than to find a better plan than that of the beadle, who took it into his head to put egg-shells in his bed, and who obtained no other sympathy from his confederate than the words, “You are not very successful in breaking them.” The Marshal de Saxe did not give much consolation to his Popeliniere when they discovered in company that famous revolving chimney, invented by the Duc de Richelieu. “That is the finest piece of horn work that I have ever seen!” cried the victor of Fontenoy. Let us hope that your espionage will not give you so troublesome a lesson. Such misfortunes are the fruits of the civil war and we do not live in that age. 4. THE INDEX. The Pope puts books only on the Index; you will mark with a stigma of reprobation men and things. It is forbidden to madame to go into a bath except in her own house. It is forbidden to madame to receive into her house him whom you suspect of being her lover, and all those who are the accomplices of their love. It is forbidden to madame to take a walk without you. But the peculiarities which in each household originate from the diversity of characters, the numberless incidents of passion, and the habits of the married people give to this black book so many variations, the lines in it are multiplied or erased with such rapidity that a friend of the author has called this Index _The History of Changes in the Marital Church_. There are only two things which can be controlled or prescribed in accordance with definite rules; the first is the country, the second is the promenade. A husband ought never to take his wife to the country nor permit her to go there. Have a country home if you like, live there, entertain there nobody excepting ladies or old men, but never leave your wife alone there. But to take her, for even half a day, to the house of another man is to show yourself as stupid as an ostrich.