Those who are familiar with the vast amount of ethnological literature published since the close of last century will realize that to revise and bring up to date a work whose range in space and time covers the whole world from prehistoric ages down to the present day, is a task impossible of accomplishment within the compass of a single volume. Recent discoveries have revolutionized our conception of primeval man, while still providing abundant material for controversy, and the rapidly increasing pile of ethnographical matter, although a vast amount of spade work remains to be done, is but one sign of the remarkable interest in ethnology which is so conspicuous a feature of the present decade. Even to keep abreast of the periodical literature devoted to his subject provides ample occupation for the ethnologist and few are those who can now lay claim to such an omniscient title.

Under such circumstances the faults of omission and compression could not be avoided in revising Professor Keane's work, but it is hoped that the copious references which form a prominent feature of the present edition will compensate in some measure for these obvious defects. The main object of the revisers has been to retain as much as possible of the original text wherever it fairly represents current opinion at the present time, but so different is our outlook from that of 1899 that certain sections have had to be entirely rewritten and in many places pages have been suppressed to make room for more important information. In every case where new matter has been inserted references are given to the responsible authorities and the fullest use has been made of direct quotation from the authors cited.

Mrs Hingston Quiggin is responsible for the whole work of revision with the exception of Chapter XI, revised by Miss Lilian Whitehouse, while Dr A. C. Haddon has criticized, corrected and supervised the work throughout.

A. H. Q.
A. C. H.

10 October, 1919.