CONTENTSI.[A Ball Game on the Green]II.[Harry Gets into Difficulty]III.[A Bit of a Mystery]IV.[Harry's Secret]V.[Organizing the Club]VI.[On the Lake]VII.[Adventures on the Island]VIII.[Practicing Once More]IX.[A Boy and a Bull]X.[The First Challenge]XI.[The Last Day at School]XII.[For the Championship]XIII.[Paul's Great Catch]XIV.[An Unexpected Encounter]XV.[Swimming in the Lake]XVI.[The Finding of the Sloop]XVII.[In Which the Club's Outfit Disappears]XVIII.[An Exposure, and What Followed]XIX.[The Game at Brookside]XX.[Hare and Hounds]XXI.[Stopped by Tramps]XXII.[A Game and a Plot]XXIII.[The Kidnapping of Joe and Fred]XXIV.[On Pine Island Again]XXV.[Trying to Get Home]XXVI.[Preparations for the Great Game]XXVII.[A Race Against Time]XXVIII.[The Great Game Begun]XXIX.[The Winning Run]XXX.[After the Game—Conclusion]