Probe Mysterious Death of BrideSEVERN FALLS, Ont., May 21— (CP)—The mysterious death of a young bride, injury of her husband and. burning of their isolated honeymoon cottage are being investigated ] by provincial police today. jThe body of 22-year-old Mrs. Jack j Kettle well of Mimico, Ont., a Toronto suburb, was discovered floating in the Severn river a few hours after Ronald Barrie, owner* of the cottage, dragged her 26-year-old husband of nine days from the burning building, in an apparently dazed condition from a head injury and apparently suffering from the effects’ of a drug.Police said they thought the woman had not been drowned and that there were no burns on the body. JBarrie, a business partner of Kettle-well, who was staying with the couple at the cottage, 130 miles north of Toronto, told police he noticed the flames and found Kettle well sitting dazed inside the building. He dragged the man to safety and began looking for the wife.Unable to find the woman, Barrie look her unconscious husband to Severn Falls by motor boat, got in touch with police and drove Kettle-well to hospital.Police found the woman's body a few hours later.• • » i