"A nice way to talk when I am taking you away for your health, miss! What fault have you to find with this train? Isn't it far more comfortable than you expected it to be, eh?"

"Of course it is, Uncle; but oh! you are such a tease!"

"So I am; but I do not often find anyone who forgives a teasing as readily as you do. Come, let us move into the opposite section and give the porter a chance to make up our berths. Do you think you can climb into the upper one?"

"I am afraid you will have to boost me up there, Uncle, and ask the porter to put a little railing across the front so I won't fall out."

"No, no, pet, I am only joking. I shall do the climbing."

Through the snow-clad mountains of Pennsylvania, across frozen rivers and great white plains sped the train until at last the Doctor said, "We shall soon see the 'Father of Waters.'"

"Is Mr. Waters an old friend of yours, Uncle?"

Many a laugh had the Doctor enjoyed since leaving New York, and often the passengers had been forced to join him, though they had not always heard what Mary had said. "I forgot that you have not studied geography, dearie. I am speaking of the Mississippi River, which is called by that name. We change cars at St. Louis, a fine old city on its banks."

The next afternoon when Mary awoke from her nap, the Doctor called her to see some Indians. Instead of looking out the window, she caught up Amelia Anabelle's white coat and wound it around her head, insisting, "Tie your muffler or something white around your head, Uncle! Oh, be quick! Do you think they will come on the train?"

The Doctor looked at the child in surprise.