CONTENTS 



CHAPTER PAGE 



XXV THE MICROBE OF BUTTER . . , -'. . . 90 



XXVI THE MICROBE OF CHEESE . . . . . . . 95 



XXVII THE MICROBE OF VINEGAR . . 101 



PART III MICROBES OF THE FARM 

 MICROBES OF THE FARM 



XXVIII THE GROWING PLANT 



XXIX MICROBES AS ENRICHERS OF THE SOIL . 



XXX How PLANTS TAKE FOOD FROM THE AIR 



XXXI AIR FOOD AND MICROBES .... 



XXXII FOOD CYCLES AND MICROBES . 



XXXIII CUMULATIVE SERVICE 



105 

 111 

 116 

 120 

 122 

 128 



BOOK THIRD OUK INVISIBLE FOES 



PART I MICROBES OF THE NOSE, THROAT AND LUNGS 



XXXIV MICROBE OF THE COMMON COLD .... 



XXXV MICROBE OF INFLUENZA 



XXXVI MICROBE OF THE GRIPPE 



XXXVII THE MICROBE OF BRONCHITIS 



XXXVIII MICROBE OF THE WHOOPING COUGH . 



XXXIX MICROBE OF THE MUMPS 



XL THE MICROBE OF MEASLES 



XLI MICROBE OF THE LOCKJAW 



XLII THE MICROBE OF DIPHTHERIA 



XLIII THE MICROBE OF PNEUMONIA . 



136 

 138 

 141 

 145 

 148 

 150 

 152 

 155 

 159 



PART II FEVER MICROBES 



XLIV THE MICROBE OF TYPHOID FEVER . 



XLV THE MICROBE OF SCARLET FEVER . 



XLVI THE MICROBE OF MALARIAL FEVER . 



XL VII THE MICROBE OF RELAPSING FEVER . 



XLVI II THE MICROBE OF TYPHUS FEVER . 



XLIX THE MICROBE OF SPLENIC FEVER . 



L THE MICROBE OF CEREBRO-SPINAL FEVER 



LI THE MICROBE OF PUERPERAL FEVER . 



LII THE MICROBE OF RHEUMATIC FEVER . 



LIII MICROBE OF THE DENGUE FEVEB . 



LIV THE MICROBE OF YELLOW FEVER . 



165 

 171 

 174 

 179 

 182 

 184 

 187 

 189 

 192 

 194 

 195 



PART III PLAGUE MICROBES 



LV MICROBE OF THE BUBONIC PLAGUE . 



LVI MICROBE OF THE LEPRA PLAGUE . 



LVII MICROBE OF THE SYPHILISTIC PLAGUE 



LVIII MICROBE OF THE SMALLPOX PLAGUE 



LIX MICROBE OF THE CHOLERA PLAGUE 



199 

 202 

 204 

 206 

 208 



