four o’clock
I will call at four o'clock in the afternoon , and , should you have any other engagement at that time , I hope that you will postpone it , as this matter is of paramount importance . Yours faithfully , ``` ROBERT ST. SIMON . ' `` It is dated from Grosvenor Mansions , written with a quill pen , and the noble lord has had the misfortune to get a smear of ink upon the outer side of his right little finger , '' remarked Holmes as he folded up the epistle . `` He says four o'clock . It is three now . He will be here in an hour . '' `` Then I have just time , with your assistance , to get clear upon the subject .