"But your injuries may need attention," insisted Mr. Henderson. "I know
something about doctoring. Come here where I can see."

"No--no--the--light hurts my eyes," was the hasty reply. "I guess I'll
go to bed, so as to be all ready to start in the morning. Why don't you
leave for the moon to-night, professor?"

"There are still a few little details to look after. But are you sure
you are well enough to go with us? We may meet with hardships up on the
moon."

"Oh, I'm all ready to go," was the answer. "I'd start to-night if I
could. But now I must get to bed."

"Don't you want supper?" asked Jack.

"No, I had some just before I left the hospital."

"What hospital was it?" inquired Andy Sudds. "I was in one once, and I
didn't like it. There wa'nt enough air for me."

"I forget the name of the place," came the reply. "I can't think
clearly. I need sleep."

The newcomer kept in the shadows of the room, as if the light hurt his
eyes, and appeared restless and ill at ease. With the hand that was not
in a sling he pulled the bandages closer about his face.

"Can't you tell us more about what happened?" asked Jack, for Mark was