four o'clock
I really doubt whether I have any that will merit your notice . '' `` You underrate your powers , signor , '' I said with formal politeness . `` Allow me to call at your studio this afternoon . I have a few minutes to spare between three and four o'clock , if that time will suit you . '' `` It will suit me admirably , '' he said , with a look of gratification ; `` but I fear you will be disappointed . I assure you I am no artist . '' I smiled .