THAT night Patsy was awakened by a hand on her arm, an excited voice in her ear.

“Patsy, Patsy!� whispered Anne. “Wake up! I’ve something to tell you. Wake up and listen. I can’t wait till morning. Oh, Patsy! I know how we are going to find out Dick’s secret!�

“What? How?� Patsy was wide awake at once.

“We’ve failed and failed; it did almost seem as if he could outdo us. Oh, he would have held it over our heads the rest of our lives!�

“But how——� interrupted Patsy.

“We—it came to me in a flash—we are going to course him,� said Anne.

“Course him?� Patsy made the words an amazed question.

“As we did the bees,� Anne explained. “We’ll follow him as far as we can see him; and then we’ll take up his course from that place next time; and so on, till we get to Redville or the end of the world—wherever he goes!�

“I don’t see how we’ll manage it,� said Patsy.

“Oh, yes you do! Or you will when I tell you from A, B, C to X, Y, Z,� Anne exclaimed impatiently. “You see, Pats, we’ve got to watch him and follow him.�