One of the first things we did when we came to Mr. Jackson's station was of course to make a close comparison of our watches with his chronometer; and Mr. Armitage was also kind enough to take careful time-observations for me. It now appears that we had not been so far out, after all. We had put our watches about 26 minutes wrong, making a difference of about 6 1/2° in longitude. A protracted comparison undertaken by Mr. Armitage also showed that the escapement of our watches was very nearly what we had assumed. With the help of this information I was now enabled to work out our longitude observations pretty correctly; and one of the first tasks I here set about, now that we once more had access to paper, writing and drawing materials, and all that we had longed for so much during the winter, was to prepare a sketch-map of Franz Josef Land, as our observations led me to conclude that it must actually be. Mr. Jackson very kindly allowed me to consult the map he had made of that part of the land which he had explored. This enabled me to dispense with the labor of reckoning out my own observations in these localities. Furthermore, I have to thank Mr. Jackson for aid in every possible way, with navigation-tables, nautical almanac, [79] scales, and all sorts of drawing material. It is by a comparison of Payer's map, Jackson's map, and my own observations that I have made out the sketch-map reproduced on page 599. I have altered Payer's and Jackson's map only at places where my observations differ essentially from theirs. I make no pretence to give more than a provisional sketch; I had not even time to work out my own observations with absolute accuracy. When this has been done, and if I can gain access to all Payer's material, no doubt a considerably more trustworthy map can be produced. The only importance which I claim for the accompanying map is that it shows roughly how what we have hitherto called Franz Josef Land is cut up into innumerable small islands, without any continuous and extensive mass of land. Much of Payer's map I found to coincide well enough with our observations. But the enigma over which we had pondered the whole winter still remained unsolved. Where was Dove Glacier and the whole northern part of Wilczek Land? Where were the islands which Payer had named Braun Island, Hoffmann Island, and Freeden Island? The last might, no doubt, be identified with the southernmost island of Hvidtenland (White Land), but the others had completely disappeared. I pondered for a long time over the question how such a mistake could have crept into a map by such a man as Payer--an experienced topographer, whose maps, as a rule, bear the stamp of great accuracy and care, and a polar traveller for whose ability I have always entertained a high respect. I examined his account of his voyage, and there I found that he expressly mentions that during the time he was coasting along this Dove Glacier he had a great deal of fog, which