By 1560 all the Finnic and Tatar tribes between the Oka and the Kama had become Russian subjects.
Used to strike off from the Kama eastwards, and Ekaterinburg, on the eastern slope of the Urals.
Which separate the mouths of the Oka and the Kama and took possession of Kazan.
The double river-systems of the Volga and Kama, the Ob and Irtysh, the Angara and Yenisei, the Lena and Vitim on the Arctic slope, and the Amur and Sungari on the Pacific slope, are instances.
The sources of the Don interlace with the tributaries of the Oka, while the upper tributaries of the Kama join those of the N.
The White Sea has also been brought into connexion with the central Volga basin while the sister-river of the Volga - the Kama - became the main artery of communication with Siberia.
The river is navigable for 770 m.; grain and a variety of goods conveyed from the upper Kama are floated down, while furs, fish and other products of the sea are shipped up the river to be transported to Cherdyn on the Kama.
Isolated black-earth islands, though less fertile, occur also in Courland and Kovno, in the OkaVolga-Kama depression, on the slopes of the Urals, and in a few patches in the N.
The summer isotherms cross the winter isotherms nearly at right angles, so that Kiev and Ufa, Warsaw and Tobolsk, Riga and the upper Kama have the same average summer temperatures of 64°, 622° and 61° respectively.
Those of the later Lacustrine period, on the contrary, are so numerous that there is scarcely one lacustrine basin in the regions of the Oka, the Kama, the Dnieper, not to speak of the lake-region itself, and even the White Sea coasts, where remains of Neolithic man have not been discovered.
With Turkish (the present Bashkirs); the Bulgars, whose origin still remains doubtful, on the middle Volga and Kama; and to the S.E.
The following are the chief subdivisions of the Turko-Tatars in European Russia: - (i) The Tatars, of whom three different branches must be distinguished: (a) the Kazan Tatars on both banks of the Volga, below the mouth of the Oka, and on the lower Kama, but penetrating farther S.
The Ural industry is the older, and is still conducted on primitive methods, wood being largely used for fuel, and the ore and metals being transported by water down the Kama and other rivers.
It starts from Perm on the Kama, and, crossing the Urals, reaches Ekaterinburg - the centre of mining industry - and Tyumen on the Tura, whence steamers ply via Tobolsk to Tomsk.
On the moors in late summer the mantis (kama-kiri-niushi) is commonly met with, and the cricket (kurogi) and the cockroach, abound.
After the conquest of the Kazan Empire by Russia, part of them migrated north-eastwards to the basins of the Kama and Byelaya, and thus the Meshchers divided into two branches.
During the subsequent Ice Age the Caspian flowed over the steppes that stretch away to the north, and was probably still connected with the Black Sea (itself as yet unconnected with the Mediterranean), while northwards it sent a narrow gulf or inlet far up the Volga valley, for Aralo-Caspian deposits have been observed along the lower Kama in 56° N.
ELABUGA, a town of Russia, in the government of Vyatka, on the Kama river, 201 m.
The famous Ananiynskiy Mogilnik (burial-place) is on the right bank of the Kama, 3 m.
It occupies an advantageous position on the great artery of Russian trade, at a place where the manufactured and agricultural products of the basin of the Oka meet the metal wares from that of the Kama, the corn and salt brought from the south-eastern governments, the produce of the Caspian fisheries, and the various wares imported from Siberia, Central Asia, Caucasia and Persia.
From remote antiquity Russian merchants were wont to meet in summer with those from the East at different places on the Volga, between the mouths of the Oka and the Kama - the fair changing its site with the increasing or decreasing power of the nationalities which struggled for the possession of the middle Volga.
Then the stream turns south-east and descends into another lacustrine depression, where it receives the Kama, below Kazan.
The Kama,' which brings to the Volga a contribution ranging from 52,500 to 144,400 cub.
The Sla y s, driven perhaps to the west, had only the Volkhov and the Dnieper, while the (Mahommedan) Bulgarian empire, at the confluence of the Volga with the Kama, was so powerful that for some time it was an open question whether Islam or Christianity would gain the upper hand among the Slav idolaters.
The following names amongst others are given to the fibre: - Archangel, Bajetsky, Courish, Dorpat, Drogobusher, Dunaberg, Fabrichnoi, Fellin, Gjatsk, Glazoff, Griazourtz, Iwashkower, Jaransk, Janowitz, Jaropol, Jaroslav, Kama, Kashin, Konigsberg, Kostroma, Kotelnitch, Kowns, Krasnoholm, Kurland (Courland), Latischki, Livonian Crowns, Malmuish, Marienberg, Mochenetz, Mologin, Newel, Nikolsky, Nolinsk, Novgorod, Opotchka, Ostroff, Ostrow, Otbornoy, Ouglitch, Pernau, Pskoff, Revel, Riga, Rjeff, St Petersburg, Seretz, Slanitz, Slobodskoi, Smolensk, Sytcheffka, Taroslav, Tchesna, Totma, Twer, Ustjuga, Viatka, Vishni, Vologda, Werro, Wiasma, Witebsk.
The Bashkirs who live between the Kama, Ural and Volga are possibly of Finnish origin, but now speak a Tatar language and have become Mahommedans.