CONTENTS 



SPRING 



NO. PAGE 



I SPRING . . . . . .11 



II WATER-BABIES 15 



III THE TALE OF THE TADPOLES . . 18 



IV CATERPILLARS ..... 25 

 V THE NATURAL HISTORY OF NESTS . 33 



VI THE STORY or KURTUS . . .41 



VII PARENTAL CARE AMONG ANIMALS . 44 



VIII THE INTERNAL ECONOMY OF THE SEA . 50 



IX FITNESSES 58 



X THE CIRCULATION OF MATTER . . 65 



SUMMER 



XI SUMMER 71 



XII SUMMER FLOWERS . . . .78 



XIII FRANKINCENSE AND MYRRH . .83 



XIV SUMMER INDUSTRIES .... 87 

 XV GUESTS AND SLAVES OF ANTS . .99 



XVI THE PLAY OF ANIMALS . . .103 



XVII EXAMPLES OF INSTINCT . . .111 



XVIII WONDERS OF INSTINCT . . .118 



XIX LIVING LIGHTS . . . .122 



XX THE BIG TREES . . . .131 



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