The Tur 'Abdin is a mountainous region in the south-east of modern Turkey, and is architecturally one of the most interesting areas for the study of early Christian architecture. In two journeys into the Tur 'Abdin early in this century, Gertrude Bell examined the more important monastic sites. Her two reports on these journeys, published in 1910 and 1913, made available for the first time a full study of the Christian architecture of the region,...