one in the morning
`` Very well , then we will all be out on deck at midnight , '' said Frank , `` and if we find that the professor is really serious in his intention to go ashore in the boat we will try and stop him . If he still persists we shall have to tell the captain . '' The others agreed that the course that Frank recommended was the best one , and they all decided to adopt his plan . But the boys were heavy sleepers and besides were tired out when they sought their bunks , so that when Frank , who was the first to wake , opened his eyes it was past one in the morning . With a start the boy jumped out of bed and hastily called the others . `` We may not be too late yet , '' he said , as he hastily slipped into trousers , shirt and slippers . But the boys WERE too late .