eleven
o'clock
and Jack 's voice was almost snarling . Cora looked at him in some surprise , and , catching Walter 's eye , made him a signal not to take any notice . Walter nodded in acquiescence , and the incident passed . As an anchor light was hoisted , and as there was no need for any particular caution , no watch was kept , every one retiring by eleven o'clock . Often , when the young people had been on outings together , Cora and her girl friends had had a `` giggling-spell '' after retiring to their rooms . But now none of them felt like making fun . It was rather a solemn little party aboard the Tartar .