24 



cillus, Jundeli.'s „Bacillus catarrhalis", Jochmann's (1) ., Bacil- 

 lus pertussis Eppendorf" and Cohen's „bacille de la mcningile 

 cerebrospinale septicemique" must all be looked upon as Pfeif- 

 fer's bacillus. 



A series of summaries will now be given, as far as pos- 

 sible in chronological order, of papers selected from the litera- 

 ture touching upon the occurrence of Pfeiffer's bacillus. (In 

 the absence of any other information its occurrence in the 

 respiratory tract is meant). 



The choice of papers for discussion has not been made 

 exclusively on the basis of their importance but the object 

 has been especially to give a representation of the different 

 kinds of experiences which shall be as general as possible. 

 Therefore there may be several among the unmentioned works 

 which are more important in themselves than some of least 

 significant of the summarised ones. 



KAMEN (1) (Czernowitz 1896), in the first few years following 

 Pfeiffer's discovery, examined the sputum of about 100 cases 

 of „influenza" and found Pfeiffer's bacillus constant at the „height" 

 of the disease and when he took the densest bits of the spulum. 



LjndenthAL (Vienna), from Dec. 1896 to Feb. 1897, at a time 

 when „influenza" did not appear in epidemic form cultivated Pfeif- 

 fer's bacillus from 8 autopsies of cases of „sporadic influenza". 

 In the majority of these cases it was obtained from the accessory 

 nasal sinuses as well as from the lungs. 



Jundell (Stockholm) found Pfeiffer's bacillus in a number of 

 cases of „influenza" in an epidemic in the winter of 1895-97. 



v. Jaksch (Prague 1899) was unable to demonstrate Pfeiffer's 

 bacillus in numerous cases which closely resembled influenza cli- 

 nically, while he found it in one case which did not run a cli- 

 nical course like influenza. 



Paltauf (1) (Vienna 1899), in an „influenza" epidemic which 

 departed from the ordinary endemic „influenza" in that the lungs 

 were attacked to a larger extent partly with abscess formation and 

 necrosis, found Pfeiffer's bacillus in 45 out of 86 samples of sputum 

 examined and in 56 autopsies (it is not stated among how many). 

 In 13 cases Pfeiffer's bacillus was found by making cultures from 

 the pelvis of the kidney and in 3 cases from the spleen. 



In the winter of 1899—1900 there seems to have been a 

 rather decided outbreak of „influenza" in Europe. 



WASSERMANN (Berlin) in a small epidemic in the months of 

 Jan. to March 1900 ? found Pfeiffer's bacillus in the sputum only 



