The princess and her father visited them once or twice every day, while Professor Palmer became a great favorite with the learned men of the city, to whom he delighted in talking of the two planets, comparing astronomical data. In addition, the princess insisted upon Robert’s being with her every evening, and their acquaintance ripened into a great friendship. Robert found himself deeply in love with her, as indeed did everyone who knew her. But with Robert it was different. He felt as if he had known her always. He was ready to make any sacrifice for her, and began to wonder where all this was leading. Meanwhile, Hakon had dispatched an ultimatum to the emperor, and was awaiting his response. Controlling, as he did, the water supply to virtually the entire northern hemisphere and part of the southern one, Hakon possessed a powerful weapon, though the usurper had by far the larger army. It was during this period of tense waiting that Robert asked Hakon whether he had any objection to their visiting the reservoirs from which the canals were supplied, before the winter season was upon them. With customary acquiescence the latter readily offered to furnish them with a guide and any other assistance which they required for the trip. 17 Robert took leave of the princess with considerable reluctance. Never had he been able to entirely overcome a strange foreboding that sometime they would be separated and never see each other again. Something of the same premonition must have been present in the princess’ mind that morning, for she seemed reluctant to let him go. “I am sure that I’m selfish in saying it, but I do so wish you were not going on this journey. I won’t rest until I see you back.” Her solicitude touched Robert deeply. As yet he had not told her of his love. Who was he to declare love to a princess? But he was sorely tempted to take her in his arms then and there--to tell her what was in his heart. “It is but little more than a day’s journey there and back,” he replied, his voice a-quaver with the lure of her. “This is one of the chief features of your planet which the professor determined to defy the dangers of space to see. We must not disappoint him.” “But it has proved fatal to many, and even your wonderful _Sphere_ may not return. Will you not let them go alone--Robert?” She pronounced his name quaintly, like “Roe-bert.” It was the first time she had attempted to call him by his name, which she had heard his companions use. His pulse beat madly. “Tell me,” he breathed, “do you care--Zola?” She blushed adorably. “Yes--Robert.” His arms were suddenly about her. She buried her head on his shoulder with a little sigh, and clung to him. “Now, you will not go?” she asked presently.