The last point of good-breeding, to be noticed, 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; cleaning the teeth or nails; 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.

Another branch, under this head, may be called _table manners_. To persons of good-breeding, nothing is more annoying, than violating the conventional proprieties of the table. Reaching over another person's plate; standing up, to reach distant articles, instead of asking to have them passed; using one's own knife, and spoon, for butter, salt, or sugar, when it is the custom of the family to provide separate utensils for the purpose; setting cups, with tea dripping from them, on the tablecloth, instead of the mats or small plates furnished; using the tablecloth, instead of the napkins; eating fast, and in a noisy manner; putting large pieces in the mouth; looking and eating as if very hungry, or as if anxious to get at certain dishes; sitting at too great a distance from the table, and dropping food; laying the knife and fork on the tablecloth, instead of on the bread, or the edge of the plate;--all these particulars, children should be taught to avoid. It is always desirable, too, to require children, when at table with grown persons, to be silent, except when addressed by others; or else their chattering will interrupt the conversation and comfort of their elders. They should always be required, too, to wait, _in silence_, till all the older persons are helped.

A Treatise on Domestic Economy — Part 96

All these things should be taught to children, gradually, and with great patience and gentleness. Some parents, with whom good-manners is a great object, are in danger of making their children perpetually uncomfortable, by suddenly surrounding them with so many rules, that they must inevitably violate some one or other, a great part of the time. It is much better to begin with a few rules, and be steady and persevering with these, till a habit is formed, and then take a few more, thus making the process easy and gradual. Otherwise, the temper of children will be injured; or, hopeless of fulfilling so many requisitions, they will become reckless and indifferent to all.

A Treatise on Domestic Economy — Part 96