Gerald and Jack applied themselves assiduously to learn the Martian language, and in this they were joined by Mr Armeath. Then, by way of relaxation, they gained the king’s permission to learn the mysteries and use of the trident and shield. Monck fitted them out in suits of the shining armour, and they practised under the instruction of one named Aveena, a young noble of the Court. Thanks to his tuition, they became so expert that they entered for contests before the king, and came off victorious in more than one bout with others of their own age. Silas Zuanstroom was one of those they each vanquished in turn; only with the result, however, of increasing the coldness which had grown up between the two parties of travellers from the Earth. One day, Gerald met with yet another disagreeable adventure in the Zoo, and again narrowly escaped a terrible death. This time it was a large venomous serpent of vicious and aggressive disposition, which (again by some ’accident’) had got loose just about the time when Gerald, unarmed and unsuspicious of danger, was taking his stroll round the cages. Monck came upon him, a little later, clinging to the upper branches of a tall palm-like tree, which the serpent was slowly climbing, bent on reaching him. This time the engineer reported the matter to the king, who sternly ordered a strict inquiry with the object of finding out who was to blame. But no evidence was forthcoming to show that the occurrence had been other than an accident; and the affair ended in the punishment of one of the keepers in charge for negligence. But more exciting events were steadily preparing, and began to develop as the voyage went on. One morning the two chums were called into Armeath’s private apartment, where he was awaiting them with Monck. He explained that he had received the king’s permission to impart to them an important piece of information. ’I am going to entrust you with a bit of a secret,’ said he, ’and I must ask you to regard it as confidential, and say nothing about it to any one—particularly to the Zuanstrooms; which, of course, includes the two lads. Doubtless you have wondered what it was which induced King Ivanta to pay a second visit to our Earth. It is this, that what we call precious stones do not exist naturally in Mars. None were ever seen there until the king brought back a quantity after his first visit.’ Gerald burst into an exclamation. ’Just what I guessed, sir,’ he cried. ’I have had that idea in my mind for some time!’ ’It was a shrewd guess, lad,’ Monck observed. ’The fact is, that once the Martians had set eyes on them they went almost mad over them, and became clamorous for a larger supply to be brought, in order that those who could afford it might be able to purchase some.