We expressed our readiness, and in ten minutes were in the station wagon, rolling rapidly down the long drive, for it was then after nine.[…]As we reached the lodge we heard the whistle, and we backed up against one side of the platform as the train pulled up at the other.

Though I call them satyrs, they showed nothing of the satyr except little horns and a goatish head; all the rest of their form was human.

One BIGASS rule of being spoiler-free is never assuming other spoilervirgins have heard spoilers just because you have.

The answer appears on the seventy-second page of the book.