All this William settled in his own mind quite to his own satisfaction, entirely forgetting, strange to say, that it had been Billy's own suggestion that she go away.
Very promptly William wrote to Billy.

He told her how he missed her, and said that he had stopped trying to sort and catalogue his collections until she should be there to help him.

He told her, too, after a time, of the gray kitten, "Spunkie," that looked so much like Spunk.
In reply he received plump white envelopes directed in the round, schoolboy hand that he remembered so well.

In the envelopes were letters, cheery and entertaining, like Billy herself.

They thanked him for all his many kindnesses, and they told him something of what Billy was doing.