” XII. Blankets of Mountain-goat Wool, Bella Coola, British Columbia 278 ” XIII. House Post, near Eburne, Fraser River Delta, British Columbia 288 ” XIV. Tlingit Baskets (From G. T. Emmons, The Basketry of the Tlingit Indians) 294 ” XV. Imbricated Baskets from British Columbia and Washington 298 TABLE OF CONTENTS Preface 1 Mental attitude of primitive people 1 Primitive culture, historical growth 4 The object of the investigation is a study of dynamic conditions of art growth 7 Acknowledgments 8 I. Introduction 9 What is art? 9 Technical perfection in art 10 Emotional appeal of contents of art colors 12 Historical notations 13 II. The formal elements in art 17 Virtuosity 17 Regularity of form and virtuosity 19 Lack of virtuosity and artistic form 22 Lack of effect of artistic form 25 The plain, strong line and regular curve 31 Symmetry 32 Inverted symmetry 36 Rhythm 40 Marginal designs 55 Decoration of prominent places 60 Conclusion 62 III. Representative art 64 Representation and representative art 64 Primitive symbolic and realistic representation 69 Influence of technique upon style of representation 81