The Book of Household Management by Mrs. Beeton

These may be divided under three heads: those of ceremony, friendship, and congratulation or condolence. Visits of ceremony, or courtesy, which occasionally merge into those of friendship, are to be paid under various circumstances. Thus, they are uniformly required after dining at a friend's house, or after a ball, picnic, or any other party. These visits should be short, a stay of from fifteen to twenty minutes being quite sufficient. A lady paying a visit may remove her boa or neckerchief; but neither her shawl nor bonnet. When other visitors are announced, it is well to retire as soon as possible, taking care to let it appear that their arrival is not the cause. When they are quietly seated, and the bustle of their entrance is over, rise from your chair, taking a kind leave of the hostess, and bowing politely to the guests. Should you call at an inconvenient time, not having ascertained the luncheon hour, or from any other inadvertence, retire as soon as possible, without, however, showing that you feel yourself an intruder. It is not difficult for any well-bred or even good-tempered person, to know what to say on such an occasion, and, on politely withdrawing, a promise can be made to call again, if the lady you have called on, appear really disappointed.