PRODUCERS OF ABSCESS, CELLULITIS, ETC. 469 



of the skin and mucous membranes impetigo, sycosis, 

 phlyctenular conjunctivitis; in purlent conjunctivitis 

 and inflammation of the lachrymal sac; in acute ab- 

 scesses formed in the lymphatic glands, the parotid 

 gland, the tonsils, the mammae, etc.; in metastatic 

 abscesses and purulent collections in the joints; in em- 

 pyema; in infectious osteomyelitis, in ulcerative endo- 

 carditis, pyelonephritis, etc. It is one of the chief 

 etiological factors in the production of pyaemia in the 

 various pathological forms of that condition of disease. 



Not all persons are equally susceptible to infection 

 by the staphylococcus ; those who are in a cachectic 

 condition or suffering from constitutional diseases, like 

 diabetes, are especially predisposed to infection. In 

 healthy individuals certain parts of the body, as the 

 back of the neck and the seat, are more liable to be 

 attacked than others, with the production of furuncles, 

 carbuncles, etc. In persons in whom sores are readily 

 caused, in consequence of disturbances of nutrition, as 

 in exhausting diseases, the micrococci settle at the points 

 of least resistance. Such conditions are present in the 

 bones of debilitated young children, in fractures, and 

 injuries in general. 



The pyogenic properties of the staphylococcus have 

 been demonstrated upon man by numerous experiments. 

 Garre inoculated a small wound at the edge of one of 

 his finger-nails with a minute quantity of a pure cul- 

 ture, and purulent inflammation extending around the 

 margin of the nail resulted from the inoculation. 

 Staphylococcus aureus was recovered in cultures from 

 the pus thus formed. The same observer applied a 

 considerable quantity of a pure culture obtained from 

 this pus third generation to the unbroken skin of 



