It flows E.N.E as far as Yakutsk (62° N., 127° 40' E.), where it enters the lowlands, after being joined by the Olekma, also from the right.
From Yakutsk it goes N.
At Yakutsk navigation is generally practicable from the middle of May to the end of October, and at Kirensk, at the confluence of the Lena and the Kirenga, from the beginning of May to about the same time.
They built small vessels at Yakutsk on the Lena, 900 m.
The total yield annually amounts to some 700,000 oz., the largest quantity coming from the Olekminsk, district in the province of Yakutsk, and this district is followed by the Amur region, the Maritime province, and Nerchinsk and Transbaikalia.
Uninterrupted water communication could readily be established from Tyumen to Yakutsk, Aldansk, and the goldmines of the Vitim.
Bering Strait, at 1 The Lena at Verkholensk is navigable for 170 days, at Yakutsk for 153 days: the Yenisei at Krasnoyarsk for 196 days.
The average temperature of winter (December to February) at Yakutsk is - 40.2° F., at Verkhoyansk - 53.1°.
And - 10.2° respectively; while at Yakutsk and Verkhoyansk the thermometer occasionally falls as low as - 75° and - 85° F.
Corn sown about Yakutsk in the end of May is ripe in the end of August.
The summer isotherm of 68° F., which in Europe passes through Cracow and Kaluga, traverses Omsk, Krasnoyarsk and Irkutsk, whence it turns north to Yakutsk, and then south again to Vladivostok.
Yakutsk is thoroughly Yakutic; marriages of Russians with Yakut wives are common, and in the middle of the 19th century the Yakut language was predominant among the Russian merchants and officials.
As an independent pursuit, live-stock breeding is carried on by the Russians in eastern Transbaikalia, by the Yakuts in the province of Yakutsk, and by the Buriats in Irkutsk and Trans- Lave baikalia, but elsewhere it is secondary to agriculture.
The forests on the Amur yielded a rich return of furs during the first years of the Russian occupation, and the Amur sable, although much inferior to the Yakutsk and Transbaikalian, was largely exported.
Another route of importance before the conquest of the Amur is that which connects Yakutsk with Okhotsk or Ayan.
In 1628 the Russians reached the Lena, founded the fort of Yakutsk in 1637, and two years later reached the Sea of Okhotsk at the mouth of the Ulya river.
In 1643 Poyarkov's boats descended the Amur, returning to Yakutsk by the Sea of Okhotsk and the Aldan, and in1649-1650Khabarov occupied the banks of the Amur.
A Yakutsk Cossack, named Vaghin, wintered on Bolshoy in 1712, but it was a merchant, Lyakhov, who first described the two greater islands of this group in 1770, and three years later reached on sledges the largest island of the New Siberia group, which he named Kotelnyi.
By the close of 1823 the Russian Bible Society had formed 289 auxiliaries, extending eastwards to Yakutsk and Okhotsk; and had received altogether £145,640.
It includes the basins of the Oldoi, Zeya and Bureya, left-bank tributaries of the river Amur, and has the governments of Transbaikalia on the W., Irkutsk and Yakutsk on the N., the Maritime province on the E., and Manchuria on the S.
The Yakutsk, Okhotsk and Kamschatka sorts are good, the last being the largest and fullest furred, but of less density of colour than the others.
The most valuable are the darkest from Yakutsk in Siberia, particularly those that have silvery hairs evenly distributed over the skin.