Melody Acres is the 25-acre horse-breeding ranch at the foot of Mt. Diablo near Walnut Creek, Calif. where this slim and youthful grandmother, known familiarly as Pat, is monarch of all she surveys. Wife of an Oakland building contractor, Mrs. Jones is sole owner and operator of Melody. Many of her own horses run on western tracks, but her primary interest lies in breeding and training fine horses and treating sick and injured Thoroughbreds. Currently her modern 24-stall barn is a full house, with about half the tenants in need of her practiced care. Some of the patients are from her own string, some from other owners. Eager aides around the stable area are the Joneses' grandchildren, Kathi and Kimberley, who will volunteer for anything. Mrs. Jones is proud that in the 12 years she has been operating her farm, assisted by a professional trainer and two helpers, she has raised 55 colts and has nursed 100 sick Thoroughbreds back to health. The only tough thing about her life is that she becomes so fond of all her animals. "I cry when they are claimed by their new owners at the end of a race."