Now that he had entered upon the work with the approbation of his superior, and a conviction of its great utility, Gervaise set to work with the same zeal and ardour which he had exhibited in his military exercises. During the heat of the day he sat in the shade reading and writing with his instructor. In the cool of the morning and afternoon he walked with him on the walls, or in the country beyond them. After sunset he sat with him in an unfrequented corner of the roof, all the time conversing with him, either of his own country, or that of his instructor.