nearly ten o'clock before
They laughed , also , a thing they had felt little like doing a short time previous . The engine had run so hard , and some of the bearings had become so warm , that for the rest of the night the professor decided to let the machinery remain stationary . This would give it time to cool down he said , and they could make up the time lost the next day . Tired out with the night 's worry and labors they all slept late the next morning , and it was nearly ten o'clock before breakfast was over . The ship was started on her course once more , and Jack , who was steering , made the engine hum as the submarine scudded along , submerged about fifty feet . `` When you have time I would like to talk to you , '' said Mrs. Johnson to Captain Henderson . `` I 'm at your service now , '' replied the inventor .