ten o'clock
This proposal was instantly agreed to ; but still some of the gentlemen lingered , evidently to the discomposure of Sir George Barkley , who at length gave them another hint that it was time to depart . `` By Heaven ! '' he exclaimed , as soon as they were all gone , `` I thought they would have hung drivelling on here till the boat came down . The tide served at ten o'clock , and before one they must be off the end of the garden . How far is it from Erith ? '' `` Oh , certainly not four hours ' sail , '' answered Charnock . `` But had I not better now write the letter we talked of to the Duke ?