ORGANS AND CAVITIES OF THE HUMAN BODY 22C) 



consumption of ice-cream, sausage, canned meats, etc., is the 

 result of the action of bacteria or their products. 



Oysters and fish from sewage-polluted waters have produced 

 typhoid. Vegetables grown in manured ground or sprinkled 

 with polluted water may be a possible source of disease. 

 The practise of exposing meats and other food to street dust 

 and flies is no doubt responsible for some disease. 



CHAPTER XXIV 



BACTERIOLOGIC EXAMINATION OF THE ORGANS AND 

 CAVITIES OF THE HUMAN BODY 



THE body, on account of its constant contact with the sur- 

 rounding air, is necessarily exposed to infection, and we would 

 be likely to find on the skin and in the oral, anal, and nasal 

 cavities the varieties of microorganisms commonly around us. 

 Through the water and food the body is also contaminated; 

 but some organisms by predilection inhabit the mouth, intes- 

 tine, and other cavities, and form there a flora distinctly their 

 own. 



The Skin. The majority of microorganisms met with on the 

 skin are non-pathogenic, although underneath the nails and in 

 the hair, pus-forming microorganisms often occur, producing 

 sometimes serious abscesses on other parts of the body. 



In the sweat-glands and the sebaceous glands various organ- 

 isms have been found. The Staphylococcus epidermidis albus 

 of Welch is present normally. 



In foul-smelling perspiration of the feet Rosenbach found 

 Saprogenes No. II, which is pathogenic for rabbits. 



Micrococcus cereus albus and flavus, Diplococcus liquefa- 

 ciens albus and flavus, Staphylococcus pyogenes aureus, and 

 Streptococcus pyogenes are found underneath the nails. 



In eczema, Diplococcus albicans tardus, Diplococcus citreus 



