Extremely good entertainment and a story that has the sort of appeal that insures big sales. As a serious place of writing, it can be shot full of holes, but that's after the fun of reading it is past, so what matter? -- First and foremost, it's a good horse and child story, irresistible combination. An adolescent girl with a genius for horses, acquires in one day a string of thorough-breds, left her by an eccentric who kills himself, and a piebald barbari n, won on a lottery ticket. The child, youngest daughter of a woman who once won fame by swimming the Channel, has faith in The Piebald, and determines that he shall make history. And that is the story, culminating in the winning of the Grand National. Add to the sure fire story elements, an excellent bit of adolescent psychology and a delightful picture of a small brother, and you can forgive a lot. The publisher has tremendous faith in the sales possibilities and is backing it with national advertising.