CAUSES OF DISEASE. 



II 



of some diseases, at least, are probably ultra-micro- 

 scopic, i.e., too minute to be made out with the magnify- 

 ing powers of the present microscope. 



It will also be noticed that syphilis is placed under 

 both groups. This is done because, from the evidence 

 accumulated thus far, it seems quite probable that the 

 treponema pallidum (spirochceta pallida) of Schaudinn 

 and Hoffman is the etiological factor. 



SPECIFIC INFECTIOUS 



DISEASES OF KNOWN 



ORIGIN. 



GONORRHCEA. 



Epidemic Cerebro - spinal 



Meningitis. 

 Pneumonia (Lobar). 

 Tuberculosis. 

 Leprosy. 



Glanders (Farcy). 

 Tetanus (Lock-jaw). 

 Diphtheria. 

 Asiatic Cholera. 

 Anthrax. 

 Typhoid Fever. 



Bubonic Plague. 



Influenza (La Grippe). 



Malta Fever. 



Relapsing Fever. 



Acute Specific Dysentery 

 (Bacillary Dysentery). 



Actinomycosis. 



Mycetoma (Madura Foot). 



Malarial Fever. 



Amcebic Dysentery. 



Syphilis. 



SPECIFIC INFECTIOUS 



DISEASES OF UNKNOWN 



ORIGIN. 



Epidemic Parotitis (Mumps). 



Syphilis. 



Rabies (Hydrophobia). 



Yellow Fever. 



Measles. 



Whooping-cough. 



Scarlatina (Scarlet Fever). 



Variola (Small-pox). 



Typhus Fever. 



Vaccinia (Cow-pox, Vaccina- 

 tion). 



Varicella (Chicken-pox). 



Rubella (Rotheln). 



Dengue (Break-bone Fever). 



Rheumatic Fever (Rheumat- 

 ism). 



Beri-beri. 



Glandular Fever (?). 



Aphthous Fever (Foot and 

 Mouth Disease). 



Chancroid. 



Trachoma (Egyptian Ophthal- 

 mia). 



