CHALLENGER BEATS HER SISTER YACHT . GOUROCK. Scotland. : May 12. The Shamrock II t.'s windward- work was little lit-tle short of marvelous, and even' so was the manner In which she carried away while goingabout. Sailing on the weather weath-er bow of the otd boat, she practically kept pace with her opponent, with light winds and through smooth water. The Shamrock III easily passed the older boat In the steadier breeze. BclOW Duncan the boats started afresh on a beat out to windward, and the challenger made better bet-ter work than she had yet i-hown. In half an houfa fair sailing without flukes, she left the Shamrock I about a quarter of a mile behind. As the wind strengthened the Shamrock Til further Improved her position. At the end of the windward turn the challenger had a lead f about four miles, which- was considered consid-ered to be an extraordinary brilliant performance, per-formance, even allowing for thei aggregate aggre-gate of the wind. As the yachts were tod- far apart to thaks racing- interesting the challenger put about- and set her spinnaker for a run back. The Shamrock I also turned, and, picking up a good breeze, led the way up the Firth at a fine pace. The vachts rejoined one another, finishing the day's work with a strong reach up the Firth, In a fresh nine-knot breeze. At the start the- Shamrock I was to windward, wind-ward, on the weather bow of the challenger, chal-lenger, but th latter caught up and passed her, going clear through her lee, reaching home. off . the Gourock Yacht club-house a minute and tbarty-nve seconds sec-onds ahead.-