midnight
Which watch will you have ? '' `` The first , '' said the professor . `` Best so . Watch by him till midnight ; then wake up Samuel , and he shall call me at three . '' The Hakim was master of the position , and everything was carried out as he proposed , the doctor coming on duty to receive the same report as the professor had given to Sam , to wit , that the patient had not stirred . It was about six , and the doctor was congratulating himself upon the long , restful night his patient had enjoyed , when the face of the old Sheikh appeared at the open window , to which the doctor stepped softly and satisfied the old man as to the sick one 's state . Ibrahim nodded his satisfaction , and set to work at once upon Sam 's duties , preparing the morning meal quite as a matter of course , but receiving orders to hurry nothing , so that no one should be disturbed .