ten o'clock
`` No work could be done without them , of course , so we decided to spend the days of their absence junketing about the southern islets of the group . We marked down several spots for subsequent exploration , and on the morning of the third day set forth along the east face of the breakwater for our camp on Uschen-Tau , planning to have everything in readiness for the return of our men the next day . `` We landed just before dusk , tired and ready for our cots . It was only a little after ten o'clock that Edith awakened me . '' ` Listen ! ' she said . ` Lean over with your ear close to the ground ! '