The last or tenth Academy.
This appellation is applied in the Talmud to scholars who uninterruptedly apply themselves to communal work.
The first line of Exilarchs, which ended with Hezekiah in the year 1040, traced their descent from David through Zerubbabel. Hisdai's pedigree was through Hillel, who sprang from a female branch of the Royal line (see Graetz, vol. VI, note 10). Pethachia writes (p. 17) that a year before his arrival at Bagdad Daniel died. A nephew, David, became Exilarch jointly with R. Samuel, the Head of the great Academy, whose authority over all the communities in Asia became paramount. Samuel had an only daughter, who was learned in the Scriptures and the Talmud. She gave instruction through a window, remaining in the house, whilst the disciples were below, unable to see her.
The office of Exilarch had but recently been revived, and the Mohammed here referred to may have been Mohammed El Moktafi, the Caliph Mostanshed's predecessor.
The Alans throughout the Middle Ages occupied Georgia and the regions of the Caucasus. As to the Iron Gates which Alexander made, Yule in commenting on Marco Polo's text (Travels of Ser Marco Polo: edited by Sir Henry Yule, 3rd edition, London, John Murray, chap, iii) says that Benjamin was the first European traveller to mention this pass. Benjamin and Marco Polo both record the general belief currrent at the time that the Pass of Derbend was traversed by Alexander. It is still called in Turkish "Demis-Kapi" or the Iron Gate, and the Persians designate it "Sadd-i-Iskandar"—the Rampart of Alexander. Lord Curzon, however, in his valuable work Persia and the Persians, vol. 1, p. 293, proves conclusively that the pass through which Alexander's army marched when pursuing Darius after the battle of Arbela could not have been at Derbend. Arrian, the historian of Alexander's expeditions, writes that the pass was one day's journey from Rages (the noted city mentioned in the Book of Tobit) for a man marching at the pace of Alexander's army. But Derbend is fully 500 miles from Rages. In Lord Curzon's opinion, confirmed by Spiegel, Droysen and Schindler, the Sirdara Pass, some forty miles from Teheran on the way to Meshed, must have been the defile which Alexander's army forced. I think it will be found that Marco Polo's geography is less reliable than that of Benjamin. In the third chapter referred to above, Marco Polo speaks of the Euphrates falling into the Caspian Sea.