Then she tried on the cap.

But it proved to be the cap of Merle.
"No; you must take Wilbur's cap," he said, "because you got his clothes." "And he can wear my hat," said the girl.
The Wilbur twin viciously affirmed that he would wear no girl's hat, yet was presently persuaded that he would, at least when he sneaked home.

It was agreed by all finally that this would render him fairly a girl in the eyes of the world.

But he would not yet wear it.

He was beginning to hate this girl.