The Expedition, however, found other and unexpected matter to secure from oblivion—work which was of even greater, because of more pressing, importance. We had been informed that not only had all knowledge of the origin of the great works disappeared from the island, but that all memory of the early native culture before the advent of Christianity, which might possibly have thrown light upon them, was also gone. Happily this proved to be not altogether the case. When we arrived, such knowledge and tradition were expiring, but they were not altogether dead. It was our good fortune, in spite of language and other difficulties, to be able with patience to rescue at the eleventh hour much of high value, more especially that which points to a connection between the only recently expired bird cult and that of the images. The facts now before us make clear that the present inhabitants of the island are derived from a union of the two great stocks of the Pacific, the Melanesian and Polynesian races, and that the Melanesian element has played a large part in its development. All the evidence gathered, whether derived from the stone remains, through the surviving natives, or in other ways, points to the conclusion that these people are connected by blood with the makers of the statues; this is, of course, the crucial point. Now that this stage is reached, the problem at once falls into its right category; and we enter on the second phase of scientific quest. Easter Island is no longer an isolated mystery, there is no need to indulge in surmises as to sunken continents, it becomes part of the whole question of the culture of the Pacific and of the successive waves of migration which have passed through it. On this large and difficult subject many able minds are at work, and some striking results, already drawn from the labours of the Expedition, are included in this volume. When we have more definite knowledge as to the nature and date of these migrations which have come from the west by such stepping-stones as Pitcairn Island, or by the Marquesas and Paumotu groups, then we shall be able to deduce still further information about Easter Island. When more is ascertained of the stone works scattered throughout other islands, we shall speak with greater certainty as to whether a first or second wave of immigrants, or both combined, are responsible for its monoliths. We have a very fair idea now, when, and perhaps why, the cult of the statues ended; even if there are no further discoveries on the island, we hope in these ways to learn when and how it began.