“It’s most too good to be true,” Polly exclaimed excitedly, then very solemnly she added to Florence: “To think we will really help you graduate! It’s the most thrilling thing that ever happened to me in my whole life!”

“I’m so glad you will do it for us,” smiled Florence, and turning to Louise she added: “We’d better go back to the girls. I think they’ll be waiting for us. It’s almost time to serenade Mrs. Baird.”

Polly and Lois, left alone, could do nothing but look at each other. At last Lois gave a thoroughly contented sigh.

“Who says we’re not in luck?” she asked.

“It’s a perfect ending to a perfect year,” replied Polly, putting her arm around her friend. “You know—”

“Hush!” whispered Lois. “They’re singing!”

They opened the window and leaned far out upon the ledge. Through the warm night air came the sound of the Seniors’ voices singing their last farewell, beneath Mrs. Baird’s window, in accordance with the old Seddon Hall custom.

[CHAPTER XXI—COMMENCEMENT DAY]

The sun was just peeping over the red-tiled roof of the gym, as Polly and Lois stole softly out of the house and walked slowly in the direction of the woods. The day was warm and clear with the wonderful freshness of early morning. The ground was covered with millions of cobwebs and sparkling dewdrops that danced in the sunshine.

“Commencement Day at last,” Polly began, speaking in a subdued whisper, for they were still near the school windows.