Silvio laughed a little nervously. "And in the last stage?" he asked.
"Oh, in the last stage one--peels. H one does not, the affair is serious. I met Giacomelli yesterday--your _maestro_. He said to me: 'Senator, our excellent Silvio is in love. I am convinced that he is in love. It is a thousand pities; because, when one is in love, one is apt to take false measurements; and for an engineer to take false measurements is a bad thing!' That is what Giacomelli said to me in Piazza Colonna yesterday afternoon."
"And may one ask whom I am supposed to be in love with?" he demanded.
"As to that," observed the professor, dryly, "you probably know best. All that I would suggest is, that you do not allow the malady to become too far advanced in the second stage--unless"--and here he glanced at Giacinta--"well, unless you are quite sure that you will peel." And with a quiet chuckle he turned to his diagrams again.
Silvio caught his sister's eyes fixed upon him. Giacinta had perhaps not entirely understood her father's metaphors, but it was very clear to her that others had noticed the change she had observed in Silvio. He had evidently been less attentive to his work than was his wont; and the eminent engineer under whom he had studied and made a name for himself, becoming aware of the fact, had unconsciously divined the true cause of it. The Commendatore Giacomelli had doubtless spoken in jest to the father of his favorite pupil, thinking that a parental hint might be useful in helping Silvio to return to his former diligence. Giacinta knew her father's good-natured cynicism well enough, and felt certain that, though treating the matter as a joke, he had intended to let Silvio know that his superiors had noticed some falling off in his work.
But Giacinta was, unfortunately, only too sure that the right nail had been hit on the head, even if the blow had fallen accidentally. She did not feel uneasy lest her father should discover the fact, nor, if he did so, that he would make any efforts to discover the quarter in which Silvio's affections were engaged. The professor lived a life very much of his own, and his nature was a singularly detached one. His attitude towards the world was that of a quiet and not inappreciative spectator of a high comedy. His interests were centred in the stage, and also in the stage-machinery, and he was always ready to be amused or to sympathize as the case might be, in the passing scenes which that complex machinery produced. Giacinta often wondered whether her father ever thought of the possibility of her marriage, or ever considered that her position as an only daughter was somewhat a lonely one. He had never made the faintest allusion to the subject to her; but she was sure that if she were suddenly to announce to him that she was going to marry, he would receive the information placidly enough, and, when once he had satisfied himself that she had chosen wisely, would think no more about the matter. And it would be the same thing as far as Silvio was concerned--only, in Silvio's case, if Donna Bianca Acorari were the object on which he had set his affections, Giacinta was certain that the professor would not consider the choice a wise one. He had a great dislike to anything in the nature of social unpleasantness, as have many clever people who live in a detached atmosphere of their own. In print, or in a lecture-room, he could hit hard enough, and appeared to be utterly indifferent as to how many enemies he made, or how many pet theories he exploded by a logic which was at times irritatingly humorous and at times severely caustic. But, apart from his pen and his conferences, the Senator Rossano was merely a placid individual, slightly past middle age, with a beard inclining to gray, and a broad, intellectual forehead from under which a pair of keen, brown eyes looked upon life good-naturedly enough. Perhaps the greatest charm about Professor Rossano was his genuine simplicity--the simplicity which is occasionally, but by no means always, the accompaniment of intellectual power, and the possession of which usually denotes that power to be of a very high order. This simplicity deceived others not infrequently, but it never deceived him; on the contrary, it was perpetually adding to his knowledge, scientific and otherwise.