Star of the Sea by Joseph O’Connor Harcourt, pap.2002, $14.00, 401 pages, ISBN 978-0-15-602966-9 It’s been so dry out here that every known frog in the state has moved to Minnesota.  It’s been so dry that rattlesnakes have to carry canteens and travel in squads . . . and one of ‘em had better be a doctor. Yessir.  And that’s a fact. So, this week’s MBR No. 68 is about