"That may be useful to me," he murmured, continuing to turn over the leaves.

"It's at your service."

"Thanks. I am afraid I have nothing to offer you in ex

change, except Pliny, perhaps. And still—you know what he said of Igharghar, according to King Juba. However, come help me put my traps in place and you will see if anything appeals to you."

I accepted without further urging.

We commenced by unearthing various meteorological and astronomical instruments—the thermometers of Baudin, Salleron, Fastre, an aneroid, a Fortin barometer, chronometers, a sextant, an astronomical spyglass, a compass glass.... In short, what Duveyrier calls the material that is simplest and easiest to transport on a camel.

As Saint-Avit handed them to me I arranged them on the only table in the room.

"Now," he announced to me, "there is nothing more but books. I will pass them to you. Pile them up in a corner until I can have a book-shelf made."

For two hours altogether I helped him to heap up a real library. And what a library! Such as never before a post in the South had seen. All the texts consecrated, under whatever titles, by antiquity to the regions of the Sahara were reunited between the four rough-cast walls of that little room of the bordj. Herodotus and Pliny, naturally, and likewise Strabo and Ptolemy, Pomponius Mela, and Ammien Marcellin. But besides these names which reassured my ignorance a little, I perceived those of Corippus, of Paul Orose, of Eratosthenes, of Photius, of Diodorus of Sicily, of Solon, of Dion Cassius, of Isidor of Seville, of Martin de Tyre, of Ethicus, of Athenée, the Scriptores Historiae Augustae, the Itinerarium Antonini Augusti, the Geographi Latini Minores of Riese, the Geographi Graeci Minores of Karl Muller.... Since I have had the occasion to familiarize myself with Agatarchides of Cos and Artemidorus of Ephesus, but I admit that in this instance the presence of their dissertations in the saddle bags of a captain of cavalry caused me some amazement.

I mention further the Descrittione dell' Africa by Leon l'African, the Arabian Histories of Ibn-Khaldoun, of Al-Iaquob, of El-Bekri, of Ibn-Batoutah, of Mahommed El-Tounsi.... In the midst of this Babel, I remember the names