PUBLISHERS' NOTE
In the spring of the year, and only a few months before his lamented death, Lord Avebury subjected this work to a very thorough revision, making numerous additions dealing with recent discoveries and theories, and cutting out portions which seemed no longer essential.
Besides this a number of new illustrations have been added, to replace or supplement those of the earlier editions.
The book has been entirely reset, and, though the author was not able to pass the proof-sheets himself, every care has been taken to carry out his wish that the book should remain an accurate and up-to-date guide to the student of prehistoric times.
We wish to express our thanks to those who have assisted us in the preparation of this edition or have kindly given us permission to reproduce their work in the illustrations.
