This is the first line of the inner semicircle which connects the radiating lines from the Tungchin railway center on the northeast. It starts from Chikatobo on the upper reach of the Amur, and proceeds eastward and southeastward through many valleys and mountains of the Great Khingan Range to Nunkiang. After Nunkiang, it goes in a more southerly direction to Keshan, thence to Hailun, and then crosses the Sungari to Sansing or Ilan. This line covers a distance of about 700 miles, passing through an agricultural and gold-producing country. s. The Sansing or Ilan-Kirin Line This is the second line of the inner semicircle. It starts from Sansing and proceeds southwestward along the right bank of the Mutan River through Tauchan, Erchan, Sanchan, and Szuchan, to Chengtse where it crosses the Harbin-Vladivostok line. Then it goes to Ninguta, after crossing over the Mutan River from right to the left bank. After Ninguta it proceeds southwestward passing through Wungcheng, Lanchichan, Talachan, and Fungwangtien, to Omu. From Omu it joins the Japanese Hweining-Kirin line and proceeds westward to Kirin. This line covers a distance of about 200 miles, along the fertile Mutan Valley. t. The Kirin-Dolon Nor Line This is the third line of the inner semicircle in the Tungchin system. It starts from Kirin and follows the old highway westward to Changchun where it meets the termini of the Chinese Eastern Railway from the north and the Japanese South Manchurian Railway from the south. After Changchun, it proceeds across the plain to Shuangshan where it meets the Tungchin-Hulutao line and the Japanese Szupingkai-Chengkiatun-Taonan line. From Shuangshan, it crosses the Liao River to Liaoyuan, thence it traverses the vast plain, crossing the Tungchin-Great Northern Port line and goes to Suitung where it meets the Hulutao-Hailar line. After Suitung, it proceeds up the Liao Valley where it comes across the Hulutao-Kerulen line and then crosses the watershed to Dolon Nor where it ends. This line covers a distance of 500 miles. This completes the cobweb system of the projected North-Eastern Railway. The total length of this entire system is about 9,000 miles. PART IV The Extension of the Northwestern Railway System