Monck nodded. ’Yes, even great Jupiter, but we could not get very near to him. Saturn, however, we landed on, and spent some weeks there—awful, terrible weeks they were. My young friend, even to think of the things to be seen there is almost too much for the ordinary human brain. But, as I have said, it does one good. It instils into the mind some faint conception of the vastness, the greatness, the endless variety to be everywhere found in what we call the creation!’ ’Would that your king would make me the offer he made to you!’ cried Gerald, with glistening eyes. ’Perhaps he will. What if he has?’ was the unexpected reply. Gerald started up from the chair he had been sitting on. ’You cannot mean it!’ he exclaimed. ’What would be your reply if he made you the offer?’ ’I would accept only too gladly!’ ’You see,’ Monck explained, ’the service you rendered is one that a man like my master would never forget. I dare say you wonder how it happened that he fell into the sea. It was because the air here is so different from that which he is used to upon Mars, and which we all had been living in inside this airship. At his first visit to the Earth, years ago, he was extremely careful, and made the change gradually and cautiously. This time he seems to have been rash, or to have forgotten. Hence the air here—which is thinner and lighter than that on Mars—served him as the air on the top of a very high mountain would serve you if you were suddenly transported there. He was attacked with what you have doubtless heard of as mountain-sickness. There is vertigo, bleeding at the nose and ears, and fainting. However, his danger was your opportunity; and I must say you acted very promptly and pluckily.’ ’I only did what I would have done for any one,’ said Gerald modestly. ’I am sure of that, my boy. But I won’t keep you in suspense any longer. To come to the point, my master said I could make you the offer I have hinted at if I found you were likely to regard it with favour. I do not want your answer now, of course. You can take time to consider—there are lots of things we can talk over first. Briefly, however, when we go back to Mars we shall only be away a few months. At the end of that time we shall return here again; and if you are then tired of the adventure you will be free to leave his service and remain here.’ ’I do not need any time to make up my mind,’ Gerald burst out impetuously. ’All I should hesitate about would be as to whether my guardian’—— ’Well, we can talk to him.’ ’And Jack!’ ’Who is Jack?’ ’My chum! He must come too!’ ’Oh—h’m! I don’t know what to say about that! You had better ask King Ivanta yourself when you see him!’ ’I will!’ cried Gerald. And he did, with what result will presently appear. *CHAPTER VII* *OFF ON A TRIP TO MARS.*