June Mathis who adapted “The Four Horsemen” for the screen, was formerly a well-known ingenue with many popular comedies and musical plays on Broadway. Before that time she was a popular actress in the stock companies of the East. She joined the scenario forces of the Metro Company three years ago and at once achieved great success in her work. When “The Four Horsemen” was produced, many marveled that this had been adapted by the peppery little ingenue. “The Four Horsemen” repeated one of her friends, “Why what do you know about horses? she was asked. “You forget,” Miss Mathis replied, “that I had long experience with stock companies”..