When a card is left in person, with a message
       of congratulations, nothing should be
       written thereon.

       A man may mail his card to a woman engaged
       to be married, if acquaintance warrants
       the action.

Congratulations upon the birth of a child may be expressed by a man to its father by sending a card with the word Congratulations written on it, or by leaving it in person.

A card should be mailed to a man engaged
to be married.

Weddings.  Congratulations may be sent with
letter of acceptance or declination to a wedding
to those sending the invitations.  And
if acquaintance with bride and groom warrant,
a note of congratulations may be sent to
them also.

Guests in personal conversation with the
latter give best wishes to the bride and
congratulations to the groom.

Wedding anniversaries.  In accepting or
declining invitations to wedding anniversaries,
congratulations may be extended.

Conversation at dinners.  Aim at bright and general
       conversation, avoiding all personalities and
       any subject that all cannot join in.  This
       is largely determined by the character of the
       company.  The guests should accommodate
       themselves to their surroundings.

Cooks-tips.  It is customary for men who have
       been guests at a house party when they
       leave to remember the cook by sending her
       a tip.

Corn on the cob is eaten with the fingers of one hand. 
       A good plan is to cut off the kernels and eat
       them with the aid of a fork.

Corner of card turned down.  This is no longer
       done by persons when calling and leaving
       cards.

Correspondence.  How to address official and social
       letters.  See under title of person addressed
       —­as, archbishop, etc.

Costume balls.—­Invitations.  Invitations are similar
       to invitations to balls, except that they have
       in place of dancing in the lower left-hand
       corner.  Costume of the XVIIIth Century, Bal
       masque, or Bal Poudre.

Cotillions.  Germans are less formal than balls. 
       Supper precedes the dancing.  Those who
       do not dance or enjoy it can leave before
       that time.

       The etiquette is the same as for balls.

  Dress.  The regulation evening dress is worn.

  Hostess.  The rules governing a hostess when
       giving a ball are the same for a cotillion,
       with this addition—­that there should be an
       even number of men and women, and, failing
       this, more men than women.