LESIONS IN THE HUMAN SUBJECT . 219 



diphtheritic inflammation of the throat, which are met with in 



scarlatina l and other conditions, and they are also the organisms 



most frequently present in acute catarrhal inflammations in this 



situation. In puerperal peritonitis they are frequently found in 



a condition of purity, and 



they also appear to be the ^, ^ 



most frequent cause of % *^'-*f 



puerperal septicaemia. In SSJJj^ 



a certain proportion of 



cases they also produce 



peritonitis secondary to 



appendicitis. In pyaemia i SjfcL?. 



they are frequently pres- J ft^ 



ent, though in most cases 1 T**J 



associated with other pyo- 1 flj|jfe)L,- 



genic organisms. Some I JHL 



cases of enteritis in infants 



streptococcus enteritis 



are also apparently due 



to a streptococcus, which, 



however, presents ^ in cul- FlG 5 5._s tr eptococci in acute suppuration. 



tures certain points of Corrosive film ; stained by Gram's method 



difference from the strep- and safranin. x 1000. 



tococcus pyogenes. 



The bacillus coli communis is found in a great many inflam- 

 matory and suppurative conditions in connection with the ali- 

 mentary tract for example, in suppuration in the peritoneum, 

 or in the extraperitoneal tissue with or without perforation of the 

 bowel, in the peritonitis following strangulation of the bowel, in 

 appendicitis and the lesions following it, in suppuration in and 

 around the bile ducts, etc. It may also occur in lesions in other 

 parts of the body, endocarditis, pleurisy, etc., which in some 

 cases are associated with lesions of the intestine, though in others 

 such cannot be found. It is also frequently present in inflamma- 

 tion of the urinary passages, cystitis, pyelitis, abscesses in the 

 kidneys, etc., these lesions being in fact most frequently caused 

 by this or closely allied organisms. 



In certain cases of enteritis it is probably the causal agent, 

 though this is difficult of proof, as it is much increased in 

 numbers in practically all abnormal conditions of the intestine. 

 We may remark that it has been repeatedly proved that the 

 bacillus coli cultivated from various lesions is more virulent than 



1 True diphtheria may also occasionally be associated with this disease 

 usually as a sequel. 



