The trade of India with foreign countries is conducted partly by sea and partly across the land frontiers; but the frontier trade, though capable of much extension, is only a small fraction of the whole. The sea-borne trade is carried on chiefly through the four great ports of Calcutta, Bombay, Karachi, and Rangoon, of which Calcutta serves the fertile valley of the Ganges and Brahmaputra, Bombay serves the cotton-trade of western India, Karachi exports the wheat crop of the Punjab, and Rangoon the rice crop of Burma. Madras, which has been supplied with an artificial harbour, serves southern India, and Chittagong is rising into prominence as the point of departure for the tea and jute of eastern Bengal and Assam. The land trade is carried on with Persia, Afghanistan, Nepal, Tibet and western China. The new caravan route to Persia from Quetta by way of the Nushki railway offers facilities to traders, of which increasing advantage has been taken, but the trade is still small. Afghanistan under Abdur Rahman imposed prohibitive imposts upon trade, and the present amir followed his father's policy, but his visit to India in 1907 may result in improved relations. The trade with the tribes lying north of the Malakand Pass has improved considerably since the frontier war of 1897-98, but they are a poor community. Nepal takes the largest share of the frontier trade. The trade with Tibet has slightly improved since the treaty of Lhasa of 1904, but it still amounts to only £90,000 annually. The trade with western China is about half a million annually, and shows signs of development. Exports. A review of Indian trade by the director-general of the statistical department in India is annually presented to parliament, and therefore it is only necessary here to mention the main channels that it has taken of recent years. The chief exports are raw cotton, cotton goods and yarn, rice, wheat, oil-seeds, raw jute and jute-manufactures, hides and skins, tea, opium and lac. In 1905-1906 there was great activity in both the cotton and jute industries. In Bombay new cotton mills were erected, and old ones extended, high-speed machinery was widely introduced, and 12,000 new looms were set up. Similarly the jute trade far surpassed all records. The crop was a record one, but the demand far exceeded the supply, the cultivators reaped profits of eight millions more than the previous year, and 2000 new looms were set up in Calcutta. The tea outlook was good, and the coffee industry was recovering from the effects of plant disease and Brazilian competition. But both the indigo and opium trades are declining industries, which mean a serious loss to the Indian exchequer. Indigo fell to about one-tenth of its value in the previous decade; and an agreement was come to with China in 1907, by which the area under opium is to be gradually reduced. The total exports for 1905-1906 were valued at £112,000,000. Imports.