If, when walking with one friend, you should meet another, it is not necessary to introduce them; indeed, you should not do so without special reason for it. Never, even after an introduction, start a long conversation, unless all continue the walk in the same direction. Should you, when walking with a friend, meet a lady who desires to speak to you, your friend must stop with you, yet an introduction under such circumstances does not exact any future recognition. Sisters, brothers or other relatives may always be introduced to friends when met casually. If friends meet at public places of amusement and are accompanied by strangers, introductions are not required by etiquette, and if made do not oblige any future acquaintance. It is not necessary to have an introduction in order to pay your respects to the President of the United States, excepting that of the master of ceremonies at the receptions. He will receive your card and present you. For a private interview it is better to be introduced by a Senator or a member of the House of Representatives. In visiting foreign courts, introductions are more a matter of ceremony than in this country. If you wish to obtain an introduction to the Emperor of France, you must address your request to the Grand Chamberlain, which may be done personally or by letter. Your statement that you are an American citizen, and a reference to the American Consul will procure you an interview. Punctuality to the hour appointed for the interview is essential, and ladies present themselves in full dress; gentlemen in a dress suit of black, white vest, gloves and neck-tie. The ceremony of presentation will be explained before you are presented. In the English court, the ladies must be presented by a lady; gentlemen by a gentleman. Strangers must have credentials from the Consul before they can be introduced. If at a dinner, a ball, or upon any occasion you are introduced, at a friend's house, to one with whom you are not on good terms, though it be your bitterest enemy, etiquette requires you to salute him or her courteously, and make no sign of resentment whilst under your friend's roof. If you are introduced as a petitioner to any one in authority, that introduction does not authorize you in claiming an acquaintance afterwards. Never introduce persons who may be related to you, without calling their full name. It is done very often, even amongst well-bred people, from thoughtfulness, as, "Mrs. James, allow me to introduce my cousin Frank; Frank, Mrs. James," and poor Mrs. James is left entirely ignorant of cousin Frank's name. The proper way is to name the relationship and also the surname of the relative. If you introduce a brother or sister even, marriage may have changed the name of one. You should say: "Mrs. James, allow me to introduce to you my sister, Miss Curtis; Miss Curtis, Mrs. James."