MANY an interesting craft has slipped quietly out of Vancouver harbor, during its fifty years as a port, through the First Narrows, past Prospect Point, and melted into the track of the setting sun upon some mysterious quest. But it is altogether likely that no more interesting craft, or one carrying a more interesting complement, has left this port than that which left a trail of smoke behind her she passed up Point Grey upon a certain January day of the present year of grace. The Gunner—a j not inappropriate name “mystery ship” in the I Great War, and engaged pretty regularly since then in the hardly less exciting pursuit of rum-running, was off upon a treasure hunt, her objective being Cocos Island, 3,000 miles away.