He walked up and down, sat and stood, picked up a book at random, discarded it immediately, consulted his instruments without taking his customary notes, and seemed unable to rest easy for an instant.
Iba y venía, se sentaba y se incorporaba, tomaba un libro al azar para dejarlo en seguida, consultaba sus instrumentos sin tomar notas como solía, y parecía no poder estar quieto ni un instante.