Bokhara has for ages been a centre of learning and religious life. The mysticism which took hold on Persia in the middle ages spread also to Bokhara, and later, when the Mongol invasions of the 13th century laid waste Samarkand and other Moslem cities, Bokhara, remaining independent, continued to be a chief seat of Islamitic learning. The _madrasa_ libraries, some of which were very rich, have been scattered and lost, or confiscated by the emirs, or have perished in conflagrations. But there are still treasures of literature concealed in private libraries, and Afghan, Persian, Armenian and Turkish bibliophiles still repair to Bokhara to buy rare books. Bokhara is, in fact, the principal book-market of central Asia. The population is supposed by Russian travellers not to exceed 50,000 or 60,000, but is otherwise estimated at 75,000 to 100,000. Amongst them is a large and ancient colony of Jews. Bokhara is the most important trading town in central Asia. In the city bazaars are made or sold silk stuffs, metal (especially copper) wares, Kara-kul (i.e. astrakhan) lamb-skins and carpets. _New Bokhara_, or _Kagan_, a Russian town near the railway station, 8 m. from Bokhara itself, is rapidly growing, on a territory ceded by the emir. Pop. 2000. (P. A. K.) BOKSBURG, a town of the Transvaal; 14 m. E. of Johannesburg by rail. Pop. of the municipality (1904) 14,757, of whom 4175 were whites. It is the headquarters of the Witwatersrand coal mining industry. The collieries extend from Boksburg eastward to Springs, 11 m. distant. Brakpan, the largest colliery in South Africa, lies midway between the places named.