four o’clock
When the cloth was removed Laurent , who for some minutes had been thoughtful , turned to Camille . `` You know , '' he blurted out , `` I must paint your portrait . '' This idea delighted Madame Raquin and her son , but Therese remained silent . `` It is summer-time , '' resumed Laurent , `` and as we leave the office at four o'clock , I can come here , and let you give me a sitting for a couple of hours in the evening . The picture will be finished in a week . '' `` That will be fine , '' answered Camille , flushed with joy . `` You shall dine with us .