Chapter II: Preface: iii

INTRODUCTION v

PRINCIPLES OF CLASSIFICATION (1874) 1

ON THE EVOLUTION OF CULTURE (1875) 20
WITH PLATES I-V, AND XXI

PRIMITIVE WARFARE. I (1867) 45
WITH PLATES VI-XI

PRIMITIVE WARFARE. II (1868) 89
WITH PLATES XII-XVI

PRIMITIVE WARFARE. III (1869) 144
WITH PLATES XVII-XX

EARLY MODES OF NAVIGATION (1874) 186