In School and Out by Oliver Optic

Mr. Grant nailed up the window in Richard's room, so that when he should again walk in his sleep, he might not be exposed to the peril of breaking his neck by falling off the roof of the conservatory. When this important work was accomplished, the party retired. Mr. Presby was a philosopher, and his library had not been a merely ornamental appendage of his house. He had read a great deal, and thought a great deal; and mesmerism, biology, psychology, somnambulism, and kindred subjects, had each in its turn been considered, and a conclusion reached.

Mr. Presby, therefore, was not disposed to return to his bed when the excitement had subsided. So splendid an illustration of the phenomenon of sleepwalking was enough to kindle his enthusiasm. He tried to draw uncle Obed into a discussion on the topic, but the latter was too sleepy. Mr. Grant made a home question of the matter, and did not care to indulge in any philosophical inquiries. One after another the family retired, till the old gentleman was left alone, and then, in despair, he resorted to the "authorities" as he termed his books, and read till the inmates of the hennery began to sound the morning call.