nine o'clock
After I have crossed this bridge , I hoist it up -- so -- and cut off the communication . '' The bridge was a plank , and it crossed a chasm about four feet wide and two deep . But it was very pleasant to see the pride with which he hoisted it up and made it fast ; smiling as he did so , with a relish and not merely mechanically . `` At nine o'clock every night , Greenwich time , '' said Wemmick , `` the gun fires . There he is , you see ! And when you hear him go , I think you 'll say he 's a Stinger . '' The piece of ordnance referred to , was mounted in a separate fortress , constructed of lattice-work .