five o'clock
`` Of course , my dear sir . But then , you see , I have half-a-dozen other affairs of life and death on my hands at this moment . However , I have promised . My consultations will be over in half an hour ; I have a round of visits after that , and by -- well , say by the five o'clock express , I will go to St. Leonards . '' `` The delay will be very long , '' said Valentine . `` It can not be done sooner . I ought to go down to Hertfordshire this evening -- most interesting case -- carbuncle -- three operations in three consecutive weeks -- Swain as operator .