LAST year a friend and I rode round the north and west sides of Iceland, and from my observations then I cannot doubt that the conclusions to which Dr. J. Geikie has arrived concerning the south-west of the island apply equally to the more northerly parts. The glacier-scorings on the older lava were especially marked in a district unexplored except by a few Icelanders, and known as the Storisande or Big Sand. This desert lies to the north of Ball's Jokul and Lange Jokul, and between Arnevatn and the River Blanda. As we crossed the undulating surface of the old lava, pale and ruddy in colour, the contrast was very striking where the black basalt seemed to rise from the plain in jagged cliffs up to the ice-field which caps these ranges. Where the sand was blown off this pale lava there were the lines of glaciation clearly engraved. The trend of the desert as a whole was towards the north, and the lines of glaciation ran north and south. In the Husavik district we saw, besides these two lavas, the lava of the present century, including that of 1875.