After that they spread rapidly S., up to the nearly uninhabited valley of the Usuri, to what is now the Gulf of Peter the Great.
At the Pacific end of the Siberian railway a line connecting Vladivostok with Khabarovsk (479 m.) at the junction of the Amur and the Usuri, was first of all built, following the valley of the Usuri.
Its principal tributaries from the south are the Sungari, which the Chinese consider to be the true head-river of the Amur, and the Usuri; from the north it receives the Oldoi, Zeya, Bureya, Kur, Gorin and Amgun.
It follows the Usuri to its head (its direction now being a little west of south), and finally strikes the Pacific coast on about 42° 30' N.
By the Usuri, S.
In its course through Eastern Manchuria it forms the watershed of the Sungari, Usuri and other rivers, and in the south that of the Ya-lu and many smaller streams. it also forms the eastern boundary of the great plain of Liao-tung.
The three principal rivers of Manchuria are the Sungari,Mutankiang and Usuri already mentioned.
The Usuri rises in about 44° N.
By the Usuri and the maritime Russian province.
Corner of Transbaikalia, and then along the rivers Argun, Amur and Usuri to the frontier of Korea.
M.), connected with the Usuri; Lakes Kada and Kidzi, by which the lower Amur once flowed to the Pacific; and very many smaller ones on the left side of the lower Amur.
The northern part of the Sea of Japan, which washes the Usuri region, has, besides the smaller bays of Olga and Vladimir, the beautiful Gulf of Peter the Great, on which stands Vladivostok, the Russian naval station on the Pacific. Okhotsk and Ayan on the Sea of Okhotsk, Petropavlovsk on the east shore of Kamchatka, Nikolayevsk, and Vladivostok on the Sea of Japan, and Dui on Sakhalin are the only ports of Siberia.
Apart, and can be traced up the Usuri to Lake Khangka and Vladivostok, with a string of villages on the plains between the Zeya and the Silinji.
Usuri district and 36% in the S.
Usuri district were Koreans and Chinese, and in the Amur province there were nearly 15,000 Manchus and Koreans.
In the depression between the Bureya range and the coast ranges it suffers greatly from the heavy July and August rains, and from inundations, while on the lower Amur the agriculturists barely maintain themselves by growing cereals in clearances on the slopes of the hills, so that the settlements on the lower Amur and Usuri continually require help from government to save them from famine.
From Lake Baikal the road proceeds to Verkhne-udinsk, Chita and Stryetensk on the Shilka, whence steamers ply to the mouth of the Amur and up the Usuri and Sungacha to Lake Khangka.
On the lower Amur and on the Usuri the journey is also difficult even on horseback.
From that place it was intended to push it down the Amur to Khabarovsk, and finally to proceed up the Usuri to Vladivostok.
The building of the railway was begun at several points at once in 1892; it had, indeed, been started a year before that in the Usuri section.
Long, and proceeds first to Grafskaya, across the fertile and populous south Usuri region, then down the Usuri to Khabarovsk at the confluence of that river with the Amur.
Altogether the entire railway system, including the cost of the Usuri line, the unfinished Amur line, the circum-Baikal line and the eastern Chinese railway, is put down at a total of £87,555,760, and the total distance, all branches included, is 5413 m., of which 1070 m.
The first indirect step towards breaking it down had been taken in 1860, when Russia obtained from China the cession of the Usuri province, thus bringing a European power down to the Tumen.
In addition to agriculture, which (with the exception of the Usuri Cossacks) is sufficient to supply their needs and usually to leave a certain surplus, they"carry on extensive cattle and horse breeding, vine culture in Caucasia, fishing on the Don, the Ural, and the Caspian, hunting, bee-culture, &c. The extraction of coal, gold and other minerals which are found on their territories is mostly rented to strangers, who also own most factories.
From 1864 to 1866 he taught geography at the military school at Warsaw, and in 1867 he was admitted to the general staff and sent to Irkutsk, where he started to explore the highlands on the banks of the Usuri, the great southern tributary of the Amur.
This occupied him until 1869, when he published a book on the Usuri region, partly ethnographical in character.