The first consideration is, I suppose, that here is another horse story by a competent writer. The market seems bottomless --and horse story goes. But increasingly Dorothy Lyons has become specialized; the last book was about polo, which somewhat limited the market; this is about schooling and showing of five-gaited horses. There is the barest framework of story, as a orazily marked pinto and his mistress, Judy, an attractive teen ager provide the necessary girl-and-horse interest- and her determination to prove him a champion American saddlebred gaited show horse provides what plot there is. She and her sister must achieve this to save their Kentucky blue grass farm. The facts are no doubt sound; but somehow neither girl nor horse ever achieve personality.