This ordinary event leads on to what are called "Arrivals," that is when a person is seen, heard and perhaps spoken to in a place to which he is travelling, but whither he has not yet arrived.

Mark Twain gives an instance in his own experience.

At a large crowded reception he saw approaching him in the throng a lady whom he had known and liked many years before.

When she was near him, he lost sight of her, but met her at supper, dressed as he had seen her in the "levee".

At that moment she was travelling by railway to the town in which he was.