Produced by Louise Hope, Chris Curnow, Joseph Cooper and the Online Distributed Proofreading Team at https://www.pgdp.net [Illustration] THE TREE-DWELLERS Industrial and Social History Series _By KATHARINE ELIZABETH DOPP, Ph.D._ Author of _The Place of Industries in Elementary Education_ +Book I. THE TREE-DWELLERS.+ THE AGE OF FEAR. Illustrated with a map, 14 full-page and 46 text drawings in half-tone by HOWARD V. BROWN. Cloth. Square 12mo. 158 pages. _For the primary grades._ +Book II. THE EARLY CAVE-MEN.+ THE AGE OF COMBAT. Illustrated with a map, 16 full-page and 17 text drawings in half-tone by HOWARD V. BROWN. Cloth. Square 12mo. 183 pages. _For the primary grades._ +Book III. THE LATER CAVE-MEN.+ THE AGE OF THE CHASE. Illustrated with 27 full-page and 87 text drawings in half-tone by HOWARD V. BROWN. Cloth. Square 12mo. 197 pages. _For the primary grades._ +Book IV. THE EARLY SEA PEOPLE.+ FIRST STEPS IN THE CONQUEST OF THE WATERS. Illustrated with 21 full-page and 110 text drawings in half-tone by HOWARD V. BROWN and KYOHEI INUKAI. Cloth. Square 12mo. 224 pages. _For the intermediate grades._ +Book V. THE EARLY HERDSMEN.+ FIRST STEPS IN TAMING THE GRASS-EATING ANIMALS. Illustrated with 24 full-page and 74 text drawings in half-tone by HOWARD V. BROWN and LOUIS JENSEN. Cloth. Square 12mo. 232 pages. _For the intermediate grades._ +Book VI. THE EARLY FARMERS+. FIRST STEPS IN THE CULTIVATION OF PLANTS. Illustrated with 32 full-page, 23 half-page, and 30 text illustrations by WILLIAM WALLACE CLARKE and HOWARD V. BROWN. Cloth. Square 12mo. 236 pages. _For the intermediate grades._ [Illustration: _A map of the Tree-dwellers' country, showing the relative position of the geographical features referred to in this book._] THE TREE-DWELLERS by KATHARINE ELIZABETH DOPP _Formerly Instructor and Lecturer in the Extension Division of the University of Chicago_ [Illustration] RAND McNALLY & COMPANY New York Chicago San Francisco _Copyright, 1904_, BY KATHARINE ELIZABETH DOPP _Entered at Stationer's Hall_ All rights reserved Edition of 1930 [Illustration] Made in U.S.A. _TO MY MOTHER_ +Janet Moyes Dopp+ I DEDICATE THIS BOOK PREFACE