The horses leap free under the knotted lash of the Siberian driver. With the rumble of low thunder the ponderous wooden wheels bound over the rutty road, hurling the springless tarantass into the air and from side to side. You brace yourself with baggage and hold to the sides, but toss despite all, like corn in a popper. The hay on which you sit shifts away to one side, leaving the bare boards to rub through clothes and packs. A sudden splinter makes you jump like a startled deer beside the way. In this noisy tarantass, down the narrow road grooved with the ruts of the Mongol carts and sledges that have gone northward, you tumble and groan and bump and roll out across the open country. There is a wide plain from Maimachen. It climbs into the first barrier-range and the forest belt of Mongolia, whose plateau is the third terrace in the rise of land from the low frozen flats of the Northern Lena to the Roof of the World,--the Himalayas of the south. The northern city of Yakutsk is at a very low elevation, only a few feet above the sea. Irkutsk on the fifty-second parallel is 1521 feet in altitude, Troitzkosavsk on the fifty-first is 2600, Urga on the forty-eighth 3770, Lhassa 11,000 feet. Far to the northwest, Mongolia is a forested fur region; far to the south is Shama--the desert. Here at the north and east the forested belt of the Siberian highlands south of Baikal breaks off almost at the boundary. Snow is over everything, but thinly. It has been worn away on the road, leaving brown patches over which the tarantass, mounting the long slope with horses at a slow trot, lugubriously thuds. A long stretch of straggly trees and stumps tells of Kiahta peasants going over the border to cut wood where no timber-laws limit. Up and up we go, the way steeper every _sagene_,--afoot now and the horses leaning and pulling at the traces. Finally silhouetted against the sky appears a rough pile of stones. At its top bannerets are waving from drooping poles. It is the Borisan on the summit of the pass to which every pious Mongol adds an offering, until the pile is many feet high, with stones, sticks, pieces of bread and bones. Some throw money which no one save a Chinaman will commit the sacrilege of touching; some give a Moscow paper-wrapped sweetmeat, some a child’s worn hat or yellow-printed prayer-cloths waving on their sticks and fading in the wind;--everything is holy that is given to the gods. A piercing wind, searching and paralyzing, meets the tarantass beyond the crest at the southern border of the forest: it is Gobi’s compliments to Baikal, the salute of the great desert to the great lake. The horses stumble through the drifted snow, scarcely able to walk. The driver, blinded, half-frozen, keeps to the general direction of the obliterated trail. Barely one verst an hour is made, until, under the shelter of the bald white range of hills, the road reappears and the wind is warded off.