Despite the difficulty of migration, however, it is certain that had our mission been one of exploration pure and simple we could, during our two years’ sojourn, have traversed a far more extensive region than we did. But our first concern was the examination of the butterflies, moths, and birds of the Owen Stanley range, and that within particular and somewhat restricted areas, so that our work necessitated encamping sometimes for months at a time at one particular spot, in order that the collection and preservation of our specimens might be carried on under the most advantageous conditions possible in such a wilderness. To this end we built two permanent camps, one at Dinawa, and the other at Ekeikei, at altitudes of 3600 and 1500 feet respectively. From these bases we made short expeditions in various directions, and established temporary camps on the St. Joseph River, Mount Kebea, and finally at Mafalu, our highest point of attainment, 6000 feet above the level of the sea among the fastnesses of the Owen Stanley range. But even that altitude is comparatively insignificant in the magnificent highlands of Papua. The higher we rose it was only to catch sight of still loftier ranges that piled peak on peak as far as the eye could reach. The only one of these that has as yet been trodden by the white man is Mount Victoria, which rises to a height of 13,000 feet. This was made the objective of a special expedition by Sir William Macgregor, who recently crossed British New Guinea, a journey which took him fifty-one days to accomplish. Sir William has also explored the Fly River tentatively, and D’Albertis followed its course for 600 or 700 miles; but when these achievements are mentioned, one has exhausted nearly all the serious efforts that have been made in Papuan exploration. Within the last year the Netherlands officials have issued a map that makes many valuable additions to our knowledge of the topography of the coast-line of their territory.