While aviator Walter Jackson made two more splendid flights at the Lock Haven aviation and race meet yesterday it remained for Williamsport motorcycle racers to give the audience the real thrill of the day and furnish the excitement.

It was during the 10-mile motorcycle race, and the machines were flying around the track at a dizzy rate of speed. Eight miles had been reeled off, and the flying riders were on their ninth mile when the rear tire on Gstalder’s machine exploded. Gstalder was in the lead and when the tire blew out the wheel skidded and Williamsporter, Cleo Pineau who was close behind him was unable to avoid the disabled machine, struck and was catapulted headfirst into the fence.

Fortunately, the fence around the track was of canvas and being shot into was a fortunate thing, for if he had gone the other way instead of being thrown through a heavy piece of canvas which broke his fall the result would have been very serious. As it was no bones were broken, although Pineau is badly shaken up and bruised. Deroster, who was behind, then took the lead and won the race. Because of the accident no time was taken.