Hitherto I have purposely abstained from alluding to our spring operations, as I thought that it would be better to devote a separate chapter exclusively to the account of the details of sledge equipment. But it must not be supposed, because I have omitted to say anything about the sledging during the winter, that it was neglected, and that our time was entirely occupied with our amusements and observatory duties. Such was not the case. The preparations for the spring campaign and the organization of our sledge parties in all its details were very carefully thought over and matured during the long dark hours of the winter. All works on this subject had been diligently read, in order that we might benefit by the experience of our predecessors. Nothing was neglected that could in any way conduce to the success of the enterprise, and everything that could possibly add to the health and comfort of those to be employed on work of such an arduous nature was carefully considered. The sledges, tents, and other equipments necessary for travelling had been constructed under the personal superintendence of Sir Leopold McClintock, who is the highest living authority on Arctic sledge travelling. A few alterations, which we trusted would also be improvements, were suggested by the experience gained during the autumn, and these were all carried out before the return of the sun. The results justified our anticipations. Out of the four different kinds of sledges supplied to the expedition those which found most favour with us, and with which the greatest part of the work was done, were the eight-men sledges.[1] These dragged easier, and were stronger than either the smaller or larger description of sledges. So long as the travelling remains good, that is smooth and level ice with hard snow on its surface, these sledges may be loaded to 240 lbs. for each man to drag, and a good day's work to be accomplished. This weight, of course, would only be dragged on first leaving the ship, or a depôt, and decreases at the rate of about 3 lbs. per man per diem, the amount of provisions consumed by each individual. What are called the "constant" weights, which include the sledge, tent, robes, cooking apparatus, pickaxe, shovel, etc., remain unaltered during the journey. The question of weight is one requiring the closest attention. Every trifling article, even to a small packet of a _dozen pins_ placed in the medicine chest, has to be weighed and recorded in the general equipment. The following table shows the weight of the various articles (being constant weights) required for the equipment of an Arctic sledge for forty-five days:-- EQUIPMENT OF AN EIGHT-MEN SLEDGE, PROVISIONED FOR AN ABSENCE OF FORTY-FIVE DAYS.