nine o'clock
But the scheme , once its details had been worked out , struck them all as having a fair chance for success . Briefly , it was this : Two of the boys -- Jerry and Phil were again chosen -- were to go down the river to the bridge and cross over and get the _ Big Four _ . They were to come back up the river as quietly as possible , hugging the opposite shore to a point about two hundred yards below the island , where the east bank spurred off into a fairly high hill . Here one of the boys was to leave the boat , as near nine o'clock as possible -- it was now seven -- and climb the hill , where he was to signal across to Dick Garrett , who would be watching directly opposite . Then Jerry and Phil were to make all speed to Lost Island , landing at the lower end . The Boy Scouts , and Dave and Frank , were to gather as conspicuously as possible -- a flaring camp fire would show their intentions -- and pretend that _ they _ were about to embark for the island . That _ ought _ to leave the lower end of the island unguarded for the safe landing of Jerry and Phil .