tower, If you say not. But at least we could go that far with you; you might fall off the roof."
"No, please, I'd rather go alone," said Betty firmly. "It's a test, you see, and the idea isn't to make it easy. I'll be all right, and in the morning the girls will find the card and know I didn't flunk."
After the girls had gone away to their own rooms the clock was set for a quarter of twelve, but Betty and Bobby decided that they might as well stay awake till midnight. They would lie down on their beds—Betty insisted that Bobby should undress and go to bed "right"—and wait for the time to come. Within twenty minutes they were both sound asleep.
The muffled whir of her alarm clock awakened Betty. For a moment she was dazed, then recollection cleared her mind. She slipped to the floor without waking Bobby and softly tiptoed from the room.
A dim light burned in the corridor, and Betty knew the way to the water tower. To reach it, one had to mount to the roof of the dormitory building. Betty experienced a little difficulty with the obstinate catch of the scuttle cover, but she finally mastered it and stepped out on the tarred graveled roof. The water tower, a huge tank on an iron framework, had a little enclosed room built directly under it reached by an iron ladder.
