"The boy's got a good seat, and pluck, Aymer," reported Mr. Aston. "It's more creditable to him because he has had to learn. It's not second nature to him." It took him less trouble to learn how to handle a gun, and when "off duty" to Patricia, spent a vast amount of time in the electric plant house, learning the A B C of a big dynamo. Aymer knew all this and made no mention of lessons, for Christopher was backward in more matters than booklearning and the life on a big estate, the infinite variety of interests was all good food for the boy's hungry brain and soul. He grew apace. Mr. Aston declared he was a changeling and not the thin little urchin he had first encountered by the mile-stone on the Great Road. They never alluded to his life before that, though they all knew of it, and made their own private comparisons and observations. Christopher became quite attached to the babies so long as they did not intrude on his own particular hours with Caesar, but he did not get over a certain shy reserve towards Renata. "She slips into empty places," he said to Caesar once, and Caesar laughed at him and told Renata, who coloured and wrinkled her little forehead. "He is a nice boy," she said, "and I love him for being so good to Patricia. There hasn't been a storm since he came." One day, when it was too wet for even Christopher to be out, the two children amused themselves by turning out a cupboard in a disused room. It was a perfect stronghold of treasures. Old riding whips, Badminton Magazines (marked Aymer Aston, Christopher noticed), tennis balls, cricket pads, a pair of fencing foils and mask and gloves, a host of sporting trophies from a hare's pad to a wolf's ear labelled "Kronigratz," and last of all a box full of photographs. Patricia was called away before they could investigate this last treasure trove, and Christopher, not to be alone in the glory of discovery, carried it off to Caesar's room and lay on the hearth-rug enjoying it till Caesar, busy working out estate accounts for his father, was at liberty to look too. They were interesting photographs,--to a boy. Mostly of horses ridden, led, alone, jumping, horses galloping, horses trotting, and over and over again a picture of one horse, and rider, who never seemed to wear a hat and had a thick head of hair that looked as if it might be the same colour as Caesar's. At last he came to a bigger, more distinct photo of the same man and horse. The horse was evidently a polo-pony and was galloping and the man on it in white riding things, with his shirt open at the neck and was swinging a polo stick in his hand. There was no mistaking it this time: it was undoubtedly Caesar. Christopher gave a little gasp. Caesar like that, vigorous, active, panting,--Christopher could feel it so--with life and excitement. He scrambled to his knees with the picture in his hand. "Caesar, dear Caesar, look what I've found." Aymer looked round, saw the scattered photographs, and held out his hand.