"Ah, now I have to tell you something which you will be as sorry about as I am," answered the doctor. "You see, Heidi, I have come alone. Clara was very ill and could not travel, and so the grandmother stayed behind too. But next spring, when the days grow warm and long again, they are coming here for certain." Heidi was greatly concerned; she could not at first bring herself to believe that what she had for so long been picturing to herself was not going to happen after all. She stood motionless for a second or two, overcome by the unexpected disappointment. The doctor said nothing further; all around lay the silence, only the sighing of the fir trees could be heard from where they stood. Then Heidi suddenly remembered why she had run down there, and that the doctor had really come. She lifted her eyes and saw the sad expression in his as he looked down at her; she had never seen him with that look on his face when she was in Frankfurt. It went to Heidi's heart; she could not bear to see anybody unhappy, especially her dear doctor. No doubt it was because Clara and grandmother could not come, and so she began to think how best she might console him. "Oh, it won't be very long to wait for spring, and then they will be sure to come," she said in a reassuring voice. "Time passes very quickly with us, and then they will be able to stay longer when they are here, and Clara will be pleased at that. Now let us go and find grandfather." Hand in hand with her friend she climbed up to the hut. She was so anxious to make the doctor happy again that she began once more assuring him that the winter passed so quickly on the mountain that it was hardly to be taken account of, and that summer would be back again before they knew it, and she became so convinced of the truth of her own words that she called out quite cheerfully to her grandfather as they approached, "They have not come to-day, but they will be here in a very short time."