Peter looked at it again. 'The trouble is,' he said, 'that there are no old servants who knew us as children. He was handing the photograph back to Purvis when an idea struck him. 'I tell you what, though,' he exclaimed, 'I believe the sash round the child's waist is made of Ogilvie tartan.' * * * * * A bare-legged boy on a lean pony was seen approaching them in a cloud of dust. The pony's short canter made his pace as easy as a rocking-chair; and Lara's son, who rode him, was half asleep in the heat. The post-bag dangled from his saddle, and the reins lay on the pony's neck. 'Any letters?' said Peter in Spanish, and the boy handed the bag to him. The mail-boat from England, which was run on purpose to carry Jane's weekly letter to him, had brought the big square envelope with its usual commendable punctuality. Peter chose it out from the rest of the letters, and, handing Purvis a packet which belonged to him, he gave the bag back to the boy, who cantered along with his bare legs swinging until he disappeared into the level glare of the setting sun. Peter let his horse amble on slowly, and read his letter while he rode. 'I must push on, I think,' said the quiet voice of Purvis beside him. 'There are one or two things which, I gather from my letters, I must put straight at the estancia. I hope to have definite news to communicate to you before long.' 'Thanks!' said Peter, giving him a nod. 'You will let me hear from you as soon as you know anything?' He turned his horse homewards, and Purvis rode on alone. 'If he has found my brother,' quoth Peter, 'Purvis has done his job, and I can't complain; but he has got to settle the thing up without all this confounded mystery, or else he can leave it alone. There is one thing perfectly clear. Edward himself knows nothing about his parents or his prospects, or he would have claimed the property long ago. Now, how has Purvis found out about the man what he doesn't know himself? Where has he got his clue? One thing is pretty certain--that he doesn't want me to meet my brother yet, which looks very much as if our friend Purvis was going to make some sort of bargain with the heir, whoever he is, before he allows him to know the truth about himself. Well, the affair will be judged by English lawyers when we get home, and if it is a case of blackmail, for instance, English people are not very fond of that sort of thing, so Purvis may not be able to make such a good bargain as he thinks.