During this dialogue Mr. Tulkinghorn has stood aloof by the old portmanteau, with his hands behind him, equally removed, to all appearance, from all three kinds of interest exhibited near the bed--from the young surgeon's professional interest in death, noticeable as being quite apart from his remarks on the deceased as an individual; from the old man's unction; and the little crazy woman's awe. 
During this dialogue Mr. Tulkinghorn has stood aloof by the old portmanteau, with his hands behind him, apparently unmoved. 