But on many days, and usually on the finest, the doctor chose to* go with Heidi. Then the two would often sit together on the lovely cliff where they sat the first day, and Heidi had to repeat her hymns and tell the doctor what she knew. And Peter would often sit behind them in his place, but he was now quite peaceable and no longer shook his fists at them.
Thus the lovely month of September came to an end. Then one morning the doctor came, looking less happy than usual. He said it was his last day, and he must go back to Frankfurt; this grieved him very much, for he had become as fond of the mountain as if it were his own home. This news pained the Aim-Uncle also, for he had particularly enjoyed the doctor's company, and Heidi had become so accustomed to see her beloved friend every day that she could not understand that the pleasure was now suddenly coming to an end. She looked up at him inquiringly and quite amazed. But it was really so. The doctor bade her grandfather farewell and then asked if Heidi would go with him a little way. With her hand in his she went down the mountain, but she could not fully realize that he was really going away.
After a while the doctor stood still and said that Heidi had come far enough, and she must turn back. He pressed his hand tenderly over the child's curly hair two or three times and said : —
" Now I must go, Heidi ! If only I could take you to Frankfurt and could keep you with me !"
All Frankfurt suddenly rose before Heidi's eyes, its