When you are invited verbally to dinner, it means a very unceremonious affair, and plain dressing, with early hours. Do not attempt to attend to the wants of a lady who already has an escort. It is a piece of impertinence to do so. At a party consisting of gentlemen, the host is the master of ceremonies. He alone has the right to call for toasts and songs.
Nicknames are unknown in good society.
Don't laugh when a funny thing is being said, until the climax is reached. Do not go into company smelling of onions or garlic. They are offensive to most people. Do not eat all on your plate, and do not clean it up with your bread. When a gentleman goes to a ball without a lady he must place himself at the disposal of the hostess, and dance with any ladies she selects for him.