In the days before she began molding British foreign policy in the Middle East, Gertrude Bell kept herself busy crossing the Arabian desert alone (or sometimes in company with bandits). As a travel and adventure writer, she has the very great advantage of literary talent: her diaries are neither fusty nor musty. Her book is a candid portrait of Arabia, and her accounts of encounters with sheikhs and Bedouins are markedly unexotic. They were her companions or her enemies, and she writes of them as a more domestic author might have written about the parish curate or the town lout.  (ARB52, $29.95)