"Of course," replied Johnny.

"'Of course!'" mimicked Felix. "Well, I guess I'll come down now, since the prospect isn't as good as it might be."

Johnny went in to get a pencil and a piece of paper: Felix began to come down from the roof by swinging himself off, and letting his feet rest upon the slender railing that passed along the outer edge of the platform. Just as he was putting his feet down, Clyde jumped upon him; and in trying to extricate himself from the dog, and touch the railing at the same time, he missed the railing in the darkness, and fell down, giving an impatient exclamation of pain as he reached the ground.

Sue was frightened, and ran in with the announcement that Felix had fallen off of the roof. Mr. Le Bras went out immediately, followed by Johnny and Mrs. Le Bras. Felix had arisen, but was limping up the steps, and half crying with pain. "Oh, dear!" said he, "I've sprained my ankle awfully; so I'm about sure I can't ride my bicycle for a week; and then I'd like to know what I'm going to do, staying around in the house all the time!"

Johnny's heart sank: he had counted on Felix's being off on his bicycle a good part of the next day, and what should he do if he were to be at home all the time expecting him to keep him company. Would he be able to enjoy his beautiful sky-room after all?

"Perhaps it is not as bad as you imagine, Felix," said his aunt encouragingly, while his uncle helped him up the steps and into the house; but the boy limped badly, and there was an expression of genuine pain upon his face. Mr. Le Bras seated him in an easy-chair, and placed another chair for him to rest his foot upon, while Mrs. Le Bras got the arnica to bathe the ankle. After the ankle had been bathed and bandaged, and the slippers which Sue had found in Felix's trunk substituted in place of shoes, to accommodate the swollen foot, Felix began to exclaim desolately at his forlorn condition. "I can't even do any thing to amuse myself this evening," he said; "and it's no use to go to bed, because my foot pains me so that I couldn't sleep, even if it were not early in the evening."

"Sit up here by the table," replied Johnny, "and let's figure out what part of an acre there is in the yard. Here's an extra pencil and sheet of paper. It will be real fun: let's see who gets it right first."

"It won't be any fun at all," replied Felix; "just as if there is any fun in figuring! you might as well say there is fun in going to school and studying old dry books."

Johnny made no reply. He had begun to cipher.

"What are you going to do first?" asked Felix languidly.