/ CONTENTS. xv 



PAGE 



Ehrlich's theory of the constitution of toxins Antibacterial serum 

 Lysogenic actions Haemolytic sera Agglutination Pfeiffer's phe- 

 nomenon Therapeutic effects of anti-sera Theories as to acquired 

 immunity Ehrlich's side-chain theory The theory of phagocytosis 

 Natural immunity Natural bactericidal powers Natural susceptibility 

 to toxins ' . . 460 



APPENDIX A. 

 SMALLPOX AND VACCINATION. 



Jennerian vaccination Relationship of smallpox and cowpox Bacteria in 



smallpox Protozoa as causative agents The nature of vaccination . 501 



APPENDIX B. 

 HYDROPHOBIA. 



Introductory Pathology The hydrophobic virus Prophylaxis Antirabic 



serum Methods 508 



APPENDIX C. 

 MALARIAL FEVER. 



Characters of the malarial parasite Varieties of the malarial parasite The 

 cycle of the malarial parasite in man The cycle in the mosquito 

 Methods of examination .516 



APPENDIX D. 

 AMCEBIC DYSENTERY. 



Amoebic dysentery Characters of the amoeba Distribution of the amoeba 



Relations to disease Methods of examination 529 



BIBLIOGRAPHY . . 534 



INDEX . . . 553 



