CONTENTS 



PART I 

 GENERAL DISCUSSION 



I INTRODUCTION 3 



II THE ESTHETIC RELATIONS OF MAMMALS . . 8 



III THE ECONOMIC RELATIONS OF MAMMALS IN GEN- 



ERAL ii 



IV THE BALANCE OF NATURE 15 



V MAMMALS AS A SOURCE OF HUMAN FOOD ... 20 



VI MAMMALS AS A SOURCE OF VALUABLE PRODUCTS 



OTHER THAN HUMAN FOOD ..... 25 



VII DAMAGE TO THE HUMAN FOOD SUPPLY BY MAMMALS 36 

 VIII DAMAGE BY MAMMALS TO PROPERTY OTHER THAN 



HUMAN FOOD 45 



IX THE FUR, LEATHER AND HIDE TRADES ... 50 



X DOMESTICATED MAMMALS 79 



XI MAMMALS AND THE HUNTER 84 



XII DISEASES AND PARASITES OF MAMMALS, INCLUDING 



POISONING FROM PLANTS 88 



XIII MAMMALS AS DISEASE CARRIERS 96 



XIV MAMMALS DANGEROUS TO HUMAN BEINGS . . 102 

 XV THE RELATION OF MAMMALS TO FIRE HAZARD . . 106 



XVI THE RELATION OF MAMMALS TO SOIL TURNOVER, 



EROSION, DAMS, DIKES, RESERVOIRS, CANALS, ETC. 108 

 XVII THE INFLUENCE OF WILD MAMMALS IN THE EX- 

 PLORATION AND SETTLEMENT OF NORTH AMERICA 

 AND UPON HISTORY . . ... . . 112 



XVIII MAMMALS AS SCAVENGERS . . . . . 115 



XIX MAMMALS AS ENEMIES OF OTHER MAMMALS . 117 



XX THE ECONOMIC RELATIONS OF MAMMALS AND BIRDS 120 

 XXI THE ECONOMIC RELATIONS OF MAMMALS TO FISHES 



AND OTHER COLD-BLOODED VERTEBRATES . .123 

 XXII THE ECONOMIC RELATIONS OF MAMMALS TO INSECTS 129 

 XXIII THE ECONOMIC RELATIONS OF MAMMALS TO INVER- 

 TEBRATES OTHER THAN INSECTS ... . 135 



vii 



