_Products and Industries._--In minerals Manchuria is very rich: coal, gold, iron (as well as magnetic iron ore), and precious stones are found in large quantities. Gold mines are worked at several places in the northern part of Manchuria, of which the principal are on the Muho river, an affluent of the Amur, and near the Russian frontier. Mines are also worked at Kwanyin-shan, opposite the Russian frontier town of Radevska, and at Chia-pi-kou, on an affluent of the upper Sungari. Indigo and opium are the most lucrative crops. The indigo plant is grown in large quantities in the plain country to the north of Mukden, and is transported thence to the coast in carts, each of which carries rather more than a ton weight of the dye. The poppy is cultivated wherever it will grow, the crop being far more profitable than that of any other product. Cotton, tobacco, pulse, millet, wheat and barley are also grown.
_Population._--The population is estimated as follows for each of the three divisions:--
Province of Sheng-king (Feng T'ien) 4,000,000 " " Kirin 6,500,000 " " Hei-lung-kiang 2,000,000 ---------- Total 12,500,000
_Communications._--Four principal highways traverse Manchuria. The first runs from Peking to Kirin via Mukden, where it sends off a branch to Korea. At Kirin it bifurcates, one branch going to San-sing, the extreme north-eastern town of the province of Kirin, and the other to Possiet Bay on the coast via Ninguta. The second road runs from the treaty port of Niu-chwang through Mukden to Petuna in the north-western corner of the Kirin province, and thence to Tsitsihar, Mergen and the Amur. The third also starts from Niu-chwang, and strikes southward to Kin-chow at the extremity of the Liao-tung peninsula. The fourth connects Niu-chwang with the Gate of Korea.
The original Manchurian railway was constructed under an agreement made in 1896 between the Chinese government and the Russo-Chinese bank, an institution founded in 1895 to develop Russian interests in the East. The Chinese Eastern Railway Company was formed by the bank under this agreement, to construct and work the line, and surveys were made in 1897, the town of Harbin being founded as headquarters for the work. The line, which affords through communication from Europe by way of the Trans-Siberian system, enters Manchuria near a station of that name in the north-west corner of the country, passes Khailar, and runs south-east, near Tsitsihar, to Harbin. Thence the main line continues in the same general direction to the eastern frontier of Manchuria, and so to Vladivostok. In 1898 Russia obtained a lease of the Liao-tung peninsula, and a clause of this contract empowered her to connect Port Arthur and Dalny (now Tairen) with the main Manchurian railway by a branch southward from Harbin. In spite of interruption caused by the Boxer outbreak, through communication was established in 1901. Under the Russo-Japanese treaty of August 1905, after the war, supplemented by a convention between Japan and China concluded in December of the same year, Japan took over the line from Port Arthur as far as Kwang-cheng-tsze, now known as the Southern Manchurian railway (508 m.). Branches were promoted (a) from Mukden to Antung on the Ya-lu, to connect with the Korean system, and (b) from Kwang-cheng-tsze to Kirin. The rest of the original Manchurian system (1088 miles) remains under Russian control. In the south-west of Manchuria a line of the imperial railways of Northern China gives connexion from Peking, and Branches at Kou-pang-tsze to Sin-min-ting and to Niu-chwang, and the link between Sin-min-ting and Mukden is also under Chinese control. The lines now under Russian control were laid down, and remain, on the 5 ft. gauge which is the Russian standard; but after the Russian control of the southern lines was lost the gauge was altered from that standard.