At that moment, the contrast of feeling between the two could hardly have been more strongly marked. In proportion as Amelius became more and more agitated, so Sally recovered the composure and confidence that she had lost. The first question she put to him related, not to her mother, but to his strange behaviour when he had knelt down to look at her foot. He answered, explaining to her briefly and plainly what his conduct meant. The description of what had passed between her mother and Amelius interested and yet perplexed her. “How can she be so fond of me, without knowing anything about me for all those years?” she asked. “Is my mother a lady? Don’t tell her where you found me; she might be ashamed of me.” She paused, and looked at Amelius anxiously. “Are you vexed about something? May I take hold of your hand?” Amelius gave her his hand; and Sally was satisfied. As the cab drew up at the house, the door was opened from within. A gentleman, dressed in black, hurriedly came out; looked at Amelius; and spoke to him as he stepped from the cab to the pavement. “I beg your pardon, sir. May I ask if you are any relative of the lady who lives in this house?” “No relative,” Amelius answered. “Only a friend, who brings good news to her.” The stranger’s grave face suddenly became compassionate as well as grave. “I must speak with you before you go upstairs,” he said, lowering his voice as he looked at Sally, still seated in the cab. “You will perhaps excuse the liberty I am taking, when I tell you that I am a medical man. Come into the hall for a moment--and don’t bring the young lady with you.” Amelius told Sally to wait in the cab. She saw his altered looks, and entreated him not to leave her. He promised to keep the house door open so that she could see him while he was away from her, and hastened into the hall. “I am sorry to say I have bad, very bad, news for you,” the doctor began. “Time is of serious importance--I must speak plainly. You have heard of mistakes made by taking the wrong bottle of medicine? The poor lady upstairs is, I fear, in a dying state, from an accident of that sort. Try to compose yourself. You may really be of use to me, if you are firm enough to take my place while I am away.” Amelius steadied himself instantly. “What I can do, I will do,” he answered.