Radio reports from the schooner Seth Parker promise possible solution of the disappearance in June of the tuna clipper Belle Isle, out of San Pedro. Ten men, according to the reports, were sighted on the southern shore of Gardner Island, southernmost of the Galapagos group, 400 miles off the coast of Panama. | They were thought to be natives, but when Captain John Gabelich discovered that the island is supposedly uninhabited he notified authorities. Ten ships in the vicinity have been asked to aid in determining the identity of those on the island. |