February the 2nd—43°.8 July the 2nd—1°.0
Twice we had the barometer uncommonly high, viz.:
On the 22nd December 6 A.M. 782.0 (0°) mm.
On the 17th February 6 A.M. 788.1 (0°) mm.
The lowest atmospheric pressure, 728.8 (0°) mm., occurred on the 31st December at two o'clock P.M.
The weather during the winter was very stormy, and the direction of the wind nearest the surface of the earth almost constantly between north-west and north-north-west. But already in atmospheric strata of inconsiderable height there prevailed, to judge by the direction of the clouds, a similar uninterrupted atmospheric current from the south-east, which when it occasionally sank to the surface of the earth brought with it air that was warmer and less saturated with moisture. The reason of this is easy to see, if we consider that Behring's Straits form a gate surrounded by pretty high mountains between the warm atmospheric area of the Pacific and the cold one of the Arctic Ocean. The winds must be arranged here approximately after the same laws as the draught in the door-opening between a warm and a cold room, that is to say, the cold current of air must go below from the cold room to the warm, the warm above from the warm room to the cold. The mountain heights which, according to the statement of the natives, are to be found in the interior of the Chukch peninsula besides conduce to the heat and dryness of the southerly and south-easterly winds. For they confer on the sea winds that pass over their summits the properties of the föhn winds. Our coldest winds have come from S.W. to W., that is to say, from the Old World's pole of cold, situated in the region of Werchojansk. On the existence of two currents of air, which at a certain height above the surface of the earth contend for the mastery, depends also the surprising rapidity with which the vault of heaven in the region of Behring's Straits becomes suddenly clouded over and again completely clear. Already the famous Behring's Straits' navigator, RODGERS, now Admiral in the American Navy, had noticed this circumstance, and likened it very strikingly to the drawing up and dropping of the curtain of a theatre.
In our notes on the weather a difference was always made between snöyra (fall of snow in wind) and yrsnö (snow-storm without snow-fall). The fall of snow was not very great, but as there was in the course of the winter no thaw of such continuance that the snow was at any time covered with a coherent melted crust, a considerable portion of the snow that fell remained so loose that with the least puff of wind it was whirled backwards and forwards. In a storm or strong breeze the snow was carried to higher strata of the atmosphere, which was speedily filled with so close and fine snow-dust, that objects at the distance of a few metres could no longer be distinguished. There was no possibility in such weather of keeping the way open, and the man that lost his way was helplessly lost, if he could not, like the Chukch snowed up in a drift, await the ceasing of the storm. But even when the wind was slight and the sky clear there ran a stream of snow some centimetres in height along the ground in the direction of the wind, and thus principally from N.W. to S.E. Even this shallow stream heaped snowdrifts everywhere where there was any protection from the wind, and buried more certainly, if less rapidly, than the drifting snow of the storm, exposed objects and trampled footpaths. The quantity of water, which in a frozen form is removed in this certainly not deep, but uninterrupted and rapid current over the north coast of Siberia to more southerly regions, must be equal to the mass of water in the giant rivers of our globe, and play a sufficiently great rôle, among others as a carrier of cold to the most northerly forest regions, to receive the attention of meteorologists.
The humidity of the air was observed both by August's psychrometer and Saussure's hygrometer. But I do not believe that these instruments give trustworthy results at a temperature considerably under the freezing-point. Moreover the degree of humidity at the place where there can be a question of setting up a psychrometer and hygrometer during a wintering in the high north, has not the meteorological importance which has often been ascribed to it. For the instruments are as a rule set up in an isolated louvre case, standing at a height above the surface convenient for reading. While the snow is drifting almost uninterruptedly it is impossible to keep this case clear of snow. Even the air, which was originally quite dry, must here be saturated with moisture through evaporation from the surrounding layers of snow and from the snow dust which whirls about next the surface of the earth. In order to determine the true degree of humidity in the air, I would accordingly advise future travellers to these regions to weigh directly the water which a given measure of air contains by absorbing it in tubes with chloride of calcium, calcined sulphate of copper, or sulphuric acid. It would be easy to arrange an instrument for this purpose so that the whole work could be done under deck, the air from any stratum under the mast-top being examined at will. If I had had the means to make such an examination at the Vega's winter quarters, it would certainly have appeared that the relative humidity of the air at a height of some few metres above the surface of the earth was for the most part exceedingly small.
The sandy neck of land which on the side next the vessel divided the lagoons from the sea, was bestrewn with colossal bones of the whale, and with the refuse of the Chukches, who had lived and wandered about there for centuries, and besides with portions of the skeleton of the seal and walrus, with the excreta of men, dogs, birds, &c. The region was among the most disagreeable I have seen in any of the parts inhabited by fishing Lapps, Samoyeds, Chukches, or Eskimo. When the Vega was beset there were two Chukch villages on the neighbouring beach, of which the one that lay nearest our winter haven was called Pitlekaj. It consisted at first of seven tents, which in consequence of want of food their inhabitants removed gradually in the course of the winter to a region near Behring's Straits, where fish were more abundant. At the removal only the most indispensable articles were taken along, because there was an intention of returning at that season of the year when the chase again became more productive. The other encampment, Yinretlen, lay nearer the cape towards Kolyutschin Bay, and reckoned at the beginning of our wintering likewise seven tents, whose inhabitants appeared to be in better circumstances than those of Pitlekaj. They had during the autumn made a better catch and collected a greater stock. Only some of them accordingly removed during winter.
The following encampments lay at a somewhat greater distance from our winter quarters, but so near, however, that we were often visited by their inhabitants: