The country around Cape Flora proved to be very interesting from the geological point of view, and as often as time permitted I investigated its structure, either alone, or more frequently in company with the doctor and geologist of the English expedition, Dr. Koetlitz. Many an interesting excursion did we make together up and down those steep moraines in search of fossils, which in certain places we found in great numbers. It appeared that from the sea-level up to a height of about 500 or 600 feet the land consisted of a soft clay mixed with lumps of a red-brown clay sandstone, in which lumps the fossils chiefly abounded. But the earth was so overstrewn with loose stones, which had rolled down from the basalt walls above, that it was difficult to reach it. For a long time I maintained that all this clay was only a comparatively late strand formation; but the doctor was indefatigable in his efforts to convince me that it really was an old and very extensive formation, stretching right under the superimposed basalt. At last I had to yield, when we arrived at the topmost stratum of the clay and I saw it actually going under the basalt, and found some shallower strata of basalt lower down in the clay. An examination of the fossils, which consisted for the most part of ammonites and belemnites, convinced me that the whole of this clay formation must date from the Jurassic period. At several places Dr. Koetlitz had found thin strata of coal in the clay. Petrified wood was also of common occurrence. But over the clay formation lay a mighty bed of basalt 600 or 700 feet in height, which was certainly not the least interesting feature of the country. It was distinguished by its coarse-grained structure from the majority of typical basalts, and seemed to be closely related to those which are found in Spitsbergen and Northeast Land. [81] The basalt, however, seems to vary a good deal in appearance here in Franz Josef Land. That which we found farther north--for example, at Cape M'Clintock and on Goose Island--was considerably more coarse-grained than that which we found here. The situation of the basalt here on Northbrook Island and the surrounding islands was also very different from that which we had observed farther north. It is here met with, as a rule, only at a height of 500 or 600 feet above the sea, while on the more northerly islands--from 81° northward--it reached right to the shore. Thus it dropped in an almost perpendicular wall straight into the sea at Jackson's Cape Fisher, in 81°. It was the same at Cape M'Clintock, at our winter cabin, at the headland of columnar basalt where we passed the night of August 25, 1895, at Cape Clements Markham, and at the sharp point of rock where we landed on the night between August 16th and 17th. The structure seemed to be similar, too, so far as we had seen, on the south side of Crown Prince Rudolf's Land. Wherever we had been to the northward I had kept a sharp lookout for strata