analysis of the magnetic, meteorological, astronomical, geographical, pendulum, and tidal observations, were prepared, and were accepted for publication in the Smithsonian "Contributions to Knowledge." I regret to say that the publication of these papers has been much delayed. Deeming it desirable that some of the general conclusions to which we had arrived in our discussion of the observations should be given to the world without further postponement, I proposed to embody some leading facts in a short Appendix to this volume. Upon submitting the matter to the learned Secretary of the Institution, it was, however, claimed by him that, since I had intrusted the materials to his care, the Institution now possessed the exclusive right to whatever advantage was to be derived from their publication. To a proposition so eminently reasonable I readily assented, especially as I was informed that the papers were already in type and were to be published immediately; and, considering myself thus absolved from any further responsibility to the scientific world for the long delay, I accordingly abandoned the idea of the Appendix. The Chart exhibiting the track and discoveries of my voyage, and of my various sledge journeys, was claimed, in like manner, as the exclusive property of the Smithsonian Institution, and, like the papers, was to be published immediately. Hence it is that the small map which illustrates this volume is but a copy (reduced ten diameters) of my field chart, projected on the spot from my unrevised materials. It
