158 PATHOLOGY 



germs may cause such diseases has been abundantly 

 proved by injections of cultures of the causative germ in 

 both human beings and animals. 



GONORRHEA 



Definition. A contagious catarrhal inflammation of 

 the genital mucous membrane due to the gonococcus. 



Etiology. The specific cause of this disease is infec- 

 tion with the gonococcus. This has been proved by 

 direct inoculation with the germ. Infection practically 

 always occurs through sexual intercourse, although in- 

 stances of innocent infection do occur from use of towels, 

 clothing, chambers, etc. 



Morbid Anatomy. The organism causes a suppurative 

 inflammation of the mucous surfaces with which it 

 comes in contact. The germs tend to penetrate deeply 

 into the surrounding tissue, sometimes giving rise to 

 peri-urethral abscess. It sometimes enters the blood 

 and, locating in the heart, induces endocarditis in the 

 joints, causing arthritis, etc. 



Morbid Physiology. The disturbances of function 

 occurring in this disease are due largely to the germs 

 themselves rather than to their toxins, which are not 

 capable of producing the characteristic symptoms of the 

 disease. 



LOBAR PNEUMONIA 



Definition. An acute infectious disease characterized 

 by inflammation of the lungs, toxemia, and fever. 



