292 BACTERIOLOGY. 



MicroeocGus lanceolaius (pneumococcus) has been found 

 alone in abscess of the soft parts, in purulent infiltra- 

 tion of the tissues about a fracture, in purulent cerebro- 

 spinal meningitis, in suppurative synovitis, in acute 

 pericarditis, and in acute inflammation of the middle 

 ear. 



Organisms of the bacterium pseudodiphtheriticum 

 group are frequently encountered in large numbers in 

 the pus of superficial wounds, and especially in ulcera- 

 tions of the skin and mucous membranes. 



Moreover, many of the less common organisms have 

 been detected in pure cultures in inflammatory condi- 

 tions with which they were not previously thought to 

 be concerned, and to which they are not usually related 

 etiologically. 



In consideration of such evidence as this it is plain 

 that we can no longer adhere rigidly to the opinions 

 formerly held upon the etiology of suppuration, but 

 must subject them to modifications in conformity with 

 this newer evidence. We now know that there exist 

 bacteria other than the " pyogenic cocci," which, though 

 not normally pyogenic, may give rise to tissue-changes 

 indistinguishable from those produced by the ordinary 

 pus-organisms. 1 



MICROCOCCUS GONORRHCEJE (NEISSER), 1879. 

 Synonym : Gonococcus Neisser, Bumm, 1887. 



One observes upon microscopic examination of cover- 

 slips prepared from the pus of acute gonorrhoea that 

 many of the pus-cells contain within their protoplasm 



1 Fora more detailed discussion of the subject, see " The Factors Con- 

 cerned in the Production of Suppuration," International Medical 

 Magazine, Philadelphia, May, 1892. 



