74 BACTERIA IN THE SPUTA 



found in successive periods. These pneumococci retain tena- 

 ciously the gentian violet, as I stated in the first memoir. 



Several of the preceding forms of pneumococci, particularly 

 those of types d^ e, /, /', and h, are analagous with those drawn by 

 Cornil and Babes in Les Bacteries et leur role^ PI. XV., Figs, i, 4, 

 6, and 13.* 



/, /. — The large round diplococcus, / (magnified to 2,500 

 diameters), was also found in the second period of a pulmonary 

 affection. Its articulations resemble two detached hemispheres, 

 and round the envelope adhere very minute cocci, not one of them 

 being able to penetrate the clear zone. This fact clearly indicates 

 the solidity of the sheath. 



In i' there is a small chain-like bacterium, the articulations of 

 which exhibit a series of similar diplococci, so connected that the 

 hemisphere of the one adheres to that of the other, leaving a 

 clear space between the hemispheres of each diplococcus. Such 

 chain-like bacteria are sometimes found grouped together, although 

 in small number, in pneumonic sputa. 



Other Forms of Bacilli, ut supra (Fig. 5). 



Some forms of bacilli were omitted in the other memoir for 

 want of space ; others were collectcfd later on, and these I will 

 now briefly describe. The new forms added to the first will better 

 show the identity of the bacilli of the sputa with the articulations 

 or fragments of the filaments of Leptothrix vegetating in the mouth. 



In the preceding Memoir the bacillus n (Fig. 2) represented a 

 form of transition from the young bacillary forms, «, ?z, n^ to the 

 mature forms, m, m. I then pointed out other forms of transition. 



a^ l)^ c. — In a (Fig. 5, magnified to 1,250 diameters) is seen a 

 bacillus that partakes of three distinct types, divided into three 

 segments : one internally occupied by four ellipsoidal bacteria, the 

 clear segment in the middle, slightly coloured, and the other 

 deeply coloured and opaque. It shows that the clear bacilli 

 inside — those containing bacteria and those entirely opaque — 

 belong to the same species. This bacillus was taken from influ- 

 enza sputum, but similar forms were found in other sputa and in 



the saliva. 



* Work quoted in the Bibliographical Appendix. 



