The photographs, when not otherwise stated, are by members of the Expedition. The drawings are from sketches made by the Author; those of the burial-places are from note-book outlines made in the course of work. The diagrams of the houses and burial-places are by my husband. We are deeply grateful, both personally and on behalf of the Expedition, for all the aid, both public and private, extended to our work in the interests of science. We hesitate to allude to it in detail in connection with what may, it is to be feared, seem an unworthy book, but we cannot refrain from taking this, the earliest, opportunity of acknowledging our obligations. The Admiralty lent the Expedition a Lieutenant on full pay for navigation and survey. The Royal Society honoured it by bestowing a grant of £100, and the British Association by appointing a committee to further its interests accompanied by a small gift. Valuable scientific instruments were lent by both the Admiralty and Royal Geographical Society. We are indebted to Sir Hercules Read and Captain T. A. Joyce, of the Ethnological Department of the British Museum, for the initial suggestion and much personal help. In our own University of Oxford the practical sympathy of Dr. Marett has been fully given from the time the project was first mooted till he read the proofs of the scientific part of this work; we owe more to such encouragement for any success attained than perhaps he himself realises. Mr. Henry Balfour has placed us, and all who are interested in the subject, under the greatest obligation for his work on our results which has thrown a flood of light on the culture of Easter Island, and has, in perhaps greater degree than anything else, made the Expedition seem “worth while.” Dr. Rivers, of Cambridge, kindly undertook the position of Correspondent in connection with the committee of the British Association, and has put at our disposal his great knowledge of the Pacific. Dr. Haddon has also been good enough to allow us to avail ourselves of his intimate acquaintance with its problems. Dr. Corney has rendered constant and unique assistance with regard to the accounts of Easter Island as given by the early voyagers, a line of research most important in its bearings. Our thanks are due to Dr. Seligman for kind interest, to Professor Keith for his report on the two Pitcairn Islanders who returned with the yacht, and his examination of our osteological collection; to Dr. Thomas of the Geological Survey for his report of the rocks brought back; and not least to Mr. Sydney Ray, who has given most valuable time to our vocabularies of the language.