Nigel's began as they went on.

They were all in one tone, formal, uninteresting, and requiring no answers.

There was not a suggestion of human feeling in one of them.
"He wrote them," said Betty, "so that we could not say that he had never written." Rosalie's first epistles were affectionate, but timid.

At the outset she was evidently trying to conceal the fact that she was homesick.
Gradually she became briefer and more constrained.

In one she said pathetically, "I am such a bad letter writer.