TABLE OF CONTENTS. x iii 



Living tubercle germs ... .. ... .. .. ... 152 



Cancer germs ... ... ... ... ... ... ... ... 153 



INTRODUCTION OF DISEASE GERMS INTO THE 

 BODY AND OF THEIR ESCAPE. 



Disease germs in air, water, and food ... ... ... ...156 



On detecting disease germs in the air... ... ... ... ... 161 



MODE OF ENTRANCE OF GERMS. 



Of the passage of disease germs into the blood ... ... ... 164 



State of vessels favouring the entrance of disease germs ... ... 168 



Of the presence of disease germs in the capillaries ... ... 173 



State of blood favourable to the multiplication of disease germs ... 176 



Obstruction of the capillary circulation ... ... ... ...178 



Destruction of the vessels and tissues... ... ... ... ... 181 



Multiplication of disease germs in the infected organism ... ... 187 



Concerning the possibility of disease germs passing into the sub- 

 stance of normal living bioplasm ... ... ... ... 191 



ESCAPE OF DISEASE GERMS FROM THE INFECTED ORGANISM. 



On elimination ... ... ... ... ... ... ... ... 199 



The passage of disease germs through the vessels ... ... -..213 



The constant phenomena of fever and inflammation ... ... 214 



The manner in which disease germs may occasion death ... ... 222 



Of the manner in which an organism may be "protected" from 



other attacks of the same contagious disease . . ... . . 225 



OF THE NATURE OF THE CONTAGIOUS DISEASE 

 GERM. 



Contagious disease germs not parasites ... ... ... ... 232 



Nature of contagious disease germs ... ... .. .. .. 235 



No difference to be detected in the appearance of different kinds of 



living matter ... ... ... ... ... ... !.. 246 



Disease germs may long remain dormant, though alive ... ... 248 



On the origin of disease germs ... ... ... ... --.251 



