178 PATHOLOGY 



cells and some epithelioid or giant cells. Suppuration 

 of the growth soon takes place and the ray fungus is 

 found in the pus. 



Morbid Physiology. The functional disturbances are 

 due almost entirely to the local process or the septic 

 complications which may arise. There are no toxins 

 formed. Generalization of the infection may occur in 

 man, and emboli may cause death. 



INFLUENZA 



Definition. An epidemic disease caused by the 

 Bacillus influenzae, characterized by fever, depression, 

 muscular pains, and acute catarrhal inflammation of 

 the nose, larynx, and bronchi. 



Etiology. The disease is extremely contagious, though 

 the modes of infection are not well understood. Doubt- 

 less the direct transference of the infection from one 

 individual to another is the usual manner in which it 

 takes place. 



Morbid Anatomy. There are no specific lesions in 

 influenza. The mucous membranes of the air-passages 

 are congested and swollen. The bacilli have been found 

 in the brain in cerebral influenza, and in the intestines 

 between the epithelial cells and in the basement-mem- 

 brane. , %' ; 



Morbid Physiology. But little is known of the cause 

 of the constitutional disturbances in this disease. 

 They are characteristic of a toxemia, but a toxin has 



