About four o'clock in the afternoon
Nor were there that night . The _ Porpoise _ glided along , requiring little attention , and when morning broke was several miles nearer the southern pole . The journey was continued beneath the waves and it was found much cooler under them than upon the surface , for the ship was in the midst of the equatorial heat . About four o'clock in the afternoon , when all was quiet aboard , there came a sudden yell from the engine room . Washington 's voice could be heard calling for help . Then it died away in a groan . `` Something has happened ! ''