160 SUPPURATION AND ALLIED CONDITIONS. 



present, though in most cases associated with other pyogenic 

 organisms. 



The bacillus coli communis is found in a great many 

 inflammatory and suppurative conditions in connection with 

 the alimentary tract, for example, in suppuration in the 

 peritoneum or in the extraperitoneal tissue with or without 

 perforation of the bowel, in the peritonitis following strangu- 

 lation of the bowel, in appendicitis and the lesions following 

 it, in suppuration around the bile ducts, etc. It may also 

 occur in suppurations in other parts of the body, which in 

 some cases are associated with lesions of the intestine, 

 though in others such lesions cannot be found. It is also 

 frequently present in inflammation of the urinary passages, 

 cystitis, abscesses in the kidneys, etc. 



The micrococcus tetragenus is often found in suppurations 

 in the region of the mouth or in the neck, and also occurs 

 in various lesions of the respiratory tract, in phthisical 

 cavities, abscesses in the lungs, etc. Sometimes it is present 

 alone, and probably has a pyogenic action in the human 

 subject under certain conditions. In other cases it is 

 associated with other organisms. Recently one or two 

 cases of pyaemia have been described in which this 

 organism was found in a state of purity in the pus in 

 various situations. In this latter condition the pus has 

 been described as possessing an oily viscous character, and 

 as being often blood-stained. 



The bacillus pyocyaneus is rarely found alone in pus, 

 though it is not infrequent along with other organisms. 

 We have met with it twice in cases of multiple abscesses, in 

 association with the staphylococcus pyogenes aureus. Lately 

 some diseases in children have been described in which the 

 bacillus pyocyaneus has been found throughout the body ; 

 in these cases the chief symptoms have been fever, gastro- 

 intestinal irritation, pustular or petechial eruptions on the 

 skin, and general marasmus. 



Suppurative conditions, associated with the organisms 

 of special diseases, will be described in the respective 

 chapters. 



