Henri was the first to speak. "You were right, Pierre, I shall take away with me a delightful recollection of this charming Madame Bastien. What you have just told me will often be a subject of pleasant thought to me, and--" "I understand you, Henri, and you must forgive me for not having thought of it sooner," exclaimed the doctor, noting his friend's emotion, "the sight of this youth must remind you--" "Yes, the sight of this youth does remind me of one I can never forget, my poor Fernand," said Henri, seeing the doctor hesitate. "He was about Frederick's age, so it is only natural that this handsome boy should excite my interest, an interest which is naturally increased by the admiration I feel for his brave and devoted mother. Heaven grant that, after all her love and devotion, her son is not going to be a disappointment to her. But how is it that, after he has been reared with such care and solicitude, he should now give his mother such grave cause for anxiety?" "The fact is that this lad, whom you have just seen so pale and thin and sullen and irascible, was full of health and gaiety and good humour only a few months ago. Then the relations that existed between his mother and himself were of the most charming as well as affectionate character imaginable, while his generosity of heart could not have failed to excite your liveliest admiration." "Poor boy," said Henri David, compassionately. "I believe you, Pierre, for there is such an expression of sadness and bitterness on his handsome face. It is evident that he is not bad at heart. It seems to me more as if he were suffering from some secret malady," added Henri, thoughtfully. "How strange it is that there should be such a remarkable change in him in so short a time!" "I cannot understand it myself," replied the doctor, "for heart and mind and body all seem to have been attacked at the same time. A short time ago study was a pleasure to Frederick, his imagination was brilliant, his mental faculties almost precocious in their development. All this is changed now, and about a month ago his mother, distressed at the state of apathy into which her son had so suddenly relapsed, decided to employ a tutor for him, hoping that a change of instructors and new branches of study, more especially those of natural science, would act as a sort of stimulant." "Well?" "At the end of a week the tutor, disgusted with Frederick's dullness, rudeness, and violence, left the house." "But to what do you attribute this remarkable change?"