DEAUVILLE, France--As the first full day of showing got underway for Arqana's August Yearling Sale, the sales grounds gradually filled as visitors arrived from Britain and Ireland, along with a planeload of agents and owners who came straight to Normandy from Saratoga. As if to welcome France's premier sale back to its rightful slot in the calendar, the sun also made an appearance as Arqana prepared to bring the curtain up on the European yearling season. The three-day auction begins its run on Saturday, with two select evening sessions after...