260 ESSENTIALS OF BACTERIOLOGY 



life and digestion can proceed in a perfectly sterile condition. 

 Food and air sterilized will not develop bacteria in the feces. 



In the feces of the young a great many bacteria have been 

 found that are supposed to stand in close relation with the 

 intestinal disorders common to nurslings. The majority of 

 bacteria usually present in the intestines are non-pathogenic. 

 The following varieties may be met with in the feces: Micro- 

 coccus aerogenes, Bacillus subtilis, Bacillus butyricus, Bacil- 

 lus putrificus coli, Bacillus lactis aerogenes, Bacillus coli 

 commune, Bacillus subtiliformis, and the bacteria of cholera, 

 dysentery, and typhoid, besides many yeast-cells. 



Genito-urinary Passages. In vaginal secretion Bumm 

 has been able to find a number of organisms, some of which 

 closely resemble the gonococcus; thus, there is the Diplococ- 

 cus subflavus, Micrococcus lacteus faviformis, Diplococcus 

 albicans amplus, and the vaginal bacillus. 



In the urethra of healthy persons bacteria are sometimes 

 found, usually having entered from the air. 



In the normal secretions around the prepuce a bacillus 

 called the smegma bacillus has been discovered. The spiro- 

 chaete of syphilis can be obtained from lesions about the 

 genitalia. 



From urethral pus a number of diplococci other than the 

 gonococci have been isolated. 



From the urine itself a great number of bacteria have been 

 obtained, but mostly derived from the air, finding in the 

 urine a suitable soil. The colon and typhoid bacilli gain 

 entrance into the bladder, possibly by way of the urethra, 

 and produce cystitis. In a larger number of typhoid fever 

 patients the bacilli are found in the urine. 



Microorganisms of the Blood. Many of the bacteria 

 described in this book are found in the blood of the animal 

 infected; anthrax bacilli are always found in the blood. 



When animals are subcutaneously injected with pneumo- 

 cocci they are found in large quantities in the blood. The 

 diseases of a hemorrhagic nature affecting fowls and swine 

 usually show the presence of bacteria in the vascular system. 



