90 



between the occurrence of Pfeiffer's bacillus and the other 

 kinds of bacteria. 



In both the camps (in the Jsegersborg, in both investiga- 

 tions) it was noted how the sleeping places of the carriers 

 of Pfeiffer's bacillus were distributed among the different bar- 

 racks and in each barrack. The distribution gave the impres- 

 sion of being fairly fortuitous; no typical grouping could be 

 demonstrated. 



During January and February 1922 repeated inoculations 

 were made from' healthy persons, namely the employers at the 

 State Serum Institute and from 1 2 families in the dwellings 

 connected with it. The occurrence of Pfeiffer's bacillus will 

 be seen from the following table where „A" denotes the first 

 inoculation (5. I.), „B" the 2nd., which was made between 

 19. I and 21. I., and „C", the 3rd. (16. II.). 



The examined persons are indicated by numbers. The 

 Roman figures give the number of colonies on the plate (cf. 

 p. 79). 



