Three Indiana U. GrapplersSOIonlinUnbeaten in Olympic TrialsBy United PressCOLUMBUS, O., July 8.—Sixty-- seven aspirants to membership on the American Olympic wrestling team remained in the final tryouts today as competition entered the third round.Twenty-nine were eliminated in the first and second rounds Thursday as the best grapplers from nineteen states battled it out.The original field of ninety-eight will be reduced to the final squad of fourteen by Saturday night, seven principles and seven alternates. Participants are eliminated on the demerit basis. One defeat by a fall or decision registers three demerits against the loser. Five demerits cause elimination.Three Indiana U. grapplers wereI unbeaten after the first and secondround tussles. They were Ed Bel-shaw. 134 pounds; Richard Voliva,174 pounds, and Ambrose Rascher,174 pounds. C. B. Hawkins, 123pounds; George Belshaw, 154pounds, and Robert Jones, 191 pounds, were other Hoosiers still in the running, despite lossses. Dale Goings, 145 pounds, was injured in the second round, Dustin McDonald dropped two decisions; John Kechik also lost twice, and Otto Kuss, heavyweight, lost two events by falls. Ernest Zellers of Indiana State won in the first round, but lost on a fall in the second.