Again, children should be required to ask leave, whenever they wish to gratify curiosity, or use an article which belongs to another. And if cases occur, when they can not comply with the rules of good-breeding, as, for instance, when they must step between a person and the fire, or take the chair of an older person, they should be taught either to ask leave, or to offer an apology. There is another point of good-breeding, which can not, in all cases, be understood and applied by children in its widest extent. It is that which requires us to avoid all remarks which tend to embarrass, vex, mortify, or in any way wound the feelings of another. To notice personal defects; to allude to others' faults, or the faults of their friends; to speak disparagingly of the sect or party to which a person belongs; to be inattentive when addressed in conversation; to contradict flatly; to speak in contemptuous tones of opinions expressed by another; all these are violations of the rules of good-breeding, which children should be taught to regard. Under this head comes the practice of whispering and staring about, when a teacher, or lecturer, or clergyman is addressing a class or audience. Such inattention is practically saying that what the person is uttering is not worth attending to; and persons of real good-breeding always avoid it. Loud talking and laughing in a large assembly, even when no exercises are going on; yawning and gaping in company; and not looking in the face a person who is addressing you, are deemed marks of ill-breeding. Another branch of good manners relates to the duties of hospitality. Politeness requires us to welcome visitors with cordiality; to offer them the best accommodations; to address conversation to them; and to express, by tone and manner, kindness and respect. Offering the hand to all visitors at one's own house is a courteous and hospitable custom; and a cordial shake of the hand, when friends meet, would abate much of the coldness of manner ascribed to Americans. Another point of good breeding refers to the conventional rules of propriety and good taste. Of these, the first class relates to the avoidance of all disgusting or offensive personal habits: such as fingering the hair; obtrusively using a toothpick, or carrying one in the mouth after the needful use of it; cleaning the nails in presence of others; picking the nose; spitting on carpets; snuffing instead of using a handkerchief, or using the article in an offensive manner; lifting up the boots or shoes, as some men do, to tend them on the knee, or to finger them: all these tricks, either at home or in society, children should be taught to avoid.