four o'clock
They were never limited in their praise of her work , which always seemed to them beyond criticism . `` Good-bye , for a while , '' called Dorothy , at the end of a stanza . `` I will only be gone a few minutes , I hope . Mr. Ludlow , in my letter of instructions , told me to come to him at four o'clock . I have to play over my selections to him so he can criticize them . '' Dorothy walked slowly down the hall and knocked on the sitting room door . In a moment , to her surprise , Mr. Dauntrey opened it .