The one artistic detail of Montauban's cathedral is the fine painting by Ingres (1781-1867) to be seen in the sacristy, if by any chance you can find the sacristan--which is doubtful. It is one of this artist's most celebrated paintings, and is commonly referred to as "The Vow of Louis XIII." [Illustration: ST. ETIENNE _de CAHORS_.] X ST. ETIENNE DE CAHORS St. Genulphe was the first bishop of Cahors, in the fourth century. The diocese was then, as now, a suffragan of Albi. The cathedral of St. Etienne was consecrated in 1119, but has since--and many times--been rebuilt and restored. This church is but one of the many of its class, built in Aquitaine at this period, which employed the cupola as a distinct feature. It shares this attribute in common with the cathedrals at Poitiers, Périgueux, and Angoulême, and the great churches of Solignac, Fontevrault, and Souillac, and is commonly supposed to be an importation or adaptation of the domes of St. Marc's at Venice. A distinct feature of this development is that, while transepts may or may not be wanting, the structures are nearly always without side aisles. What manner of architecture this style may presume to be is impossible to discuss here, but it is manifestly not Byzantine _pur-sang_, as most guide-books would have the tourist believe. Although much mutilated in many of its accessories and details, the cathedral at Cahors fairly illustrates its original plan. There are no transepts, and the nave is wide and short, its area being entirely roofed by the two circular cupolas, each perhaps fifty feet in diameter. In height these two details depart from the true hemisphere, as has always been usual in dome construction. There were discovered, as late as 1890, in this church, many mural paintings of great interest. Of the greatest importance was that in the westerly cupola, which presents an entire composition, drawn in black and colour. The cupola is perhaps forty feet in diameter, and is divided by the decorations into eight sectors. The principal features of this remarkable decoration are the figures of eight of the prophets, David, Daniel, Jeremiah, Jonah, Ezra, Isaiah, Ezekiel, and Habakkuk, each a dozen or more feet in height. Taken as a whole, in spite of their recent discovery, these elaborate decorations are supposed to have been undertaken by or under the direction of the bishops who held the see from 1280 to 1324; most likely under Hugo Geraldi (1312-16), the friend of Pope Clement V. and of the King of France. This churchman was burned to death at Avignon, and the see was afterward administered by procuration by Guillaume de Labroa (1316-1324), who lived at Avignon. It is then permissible to think that these wall-paintings of the cathedral at Cahors are perhaps unique in France. Including its sustaining wall, one of the cupolas rises to a height of eighty-two feet, and the other to one hundred and five feet.