It is not unusual, in New York, for those placed next each other to talk without introducing themselves—­particularly if each can read the name of the other on the place cards.

=Other necessary introductions=

Even in New York’s most introductionless circles, people always introduce: 

A small group of people who are to sit together anywhere.

Partners at dinner.

The guests at a house party.

Everyone at a small dinner or luncheon.

The four who are at the same bridge table.

Partners or fellow-players in any game.

At a dance, when an invitation has been asked for a stranger, the friend who vouched for him should personally present him to the hostess.  “Mrs. Worldly, this is Mr. Robinson, whom you said I might bring.”  The hostess shakes hands and smiles and says:  “I am very glad to see you, Mr. Robinson.”

A guest in a box at the opera always introduces any gentleman who comes to speak to her, to her hostess, unless the latter is engrossed in conversation with a visitor of her own, or unless other people block the distance between so that an introduction would be forced and awkward.

A newly arriving visitor in a lady’s drawing-room is not introduced to another who is taking leave.  Nor is an animated conversation between two persons interrupted to introduce a third.  Nor is any one ever led around a room and introduced right and left.

If two ladies or young girls are walking together and they meet a third who stops to speak to one of them, the other walks slowly on and does not stand awkwardly by and wait for an introduction.  If the third is asked by the one she knows, to join them, the sauntering friend is overtaken and an introduction always made.  The third, however, must not join them unless invited to do so.

At a very large dinner, people (excepting the gentlemen and ladies who are to sit next to each other at table) are not collectively introduced.  After dinner, men in the smoking room or left at table always talk to their neighbors whether they have been introduced or not, and ladies in the drawing-room do the same.  But unless they meet soon again, or have found each other so agreeable that they make an effort to continue the acquaintance, they become strangers again, equally whether they were introduced or not.

Some writers on etiquette speak of “correct introductions” that carry “obligations of future acquaintance,” and “incorrect introductions,” that seemingly obligate one to nothing.

Degrees of introduction are utterly unknown to best society.  It makes not the slightest difference so far as any one’s acceptance or rejection of another is concerned how an introduction is worded or, on occasions, whether an introduction takes place at all.

Fashionable people in very large cities take introductions lightly; they are veritable ships that pass in the night.  They show their red or green signals—­which are merely polite sentences and pleasant manners—­and they pass on again.