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 to Nature. The weather was almost kindly enough for an expedition. But Cassandra rejected Hampton Court, Greenwich, Richmond, and Kew in favour of the Zoological Gardens. She had once trifled with the psychology of animals, and still knew something about inherited characteristics. On Sunday afternoon, therefore, Katharine, Cassandra, and William Rodney drove off to the Zoo. As their cab approached the entrance, Katharine bent forward and waved her hand to a young man who was walking rapidly in the same direction.

“There’s Ralph Denham!” she exclaimed. “I told him to meet us here,” she added. She had even come provided with a ticket for him. William’s objection that he would not be admitted was, therefore, silenced directly. But the way in which the two men greeted each other was significant of what was going to happen. As soon as they had admired the little birds in the large cage William and Cassandra lagged behind, and Ralph and Katharine pressed on rather in advance. It was an arrangement in which William took his part, and one that suited his convenience, but he was annoyed all the same. He thought that Katharine should have told him that she had invited Denham to meet them.

“One of Katharine’s friends,” he said rather sharply. It was clear that he was irritated, and Cassandra felt for his annoyance. They were standing by the pen of some Oriental hog, and she was prodding the brute gently with the point of her umbrella, when a thousand little observations seemed, in some way, to collect in one centre. The centre was one of intense and curious emotion. Were they happy? She dismissed the question as she asked it, scorning herself for applying such simple measures to the rare and splendid emotions of so unique a couple. Nevertheless, her manner became immediately different, as if, for the first time, she felt consciously womanly, and as if William might conceivably wish later on to confide in her.