102 



SPECIFICITY OF RICKETTSIA PROWAZEKI 



Record of Guinea-pig 44 } inoculated with the viscera of 

 louse 4 of Box XXXVII 



The temperatures following the inoculation on May 24th 

 were as follows: 



May 24 102.0 



25 102.2 



26 102.9 



27 103.0 



28 102.4 



29 102.0 



30 102.7 



31 103.0 



June 1 103.0 



2 102.6 



3 102.4 



4 101.8 



5 102.6 



6 102.4 



7 102.6 



8 102.0 



9 101.8 



10 . . 102.0 



June 11 102.0 



12 102.4 



13 102.2 



14 102.0 



15 102.4 



16 No record 



17 No record 



18 102.4 



19 102.3 



20 No record 



21 102.7 



22 No record 



23 102.5 



24 / . . . No record 



25 102.6 



26 No record 



27 . . 102.6 



On June 28th this guinea-pig was inoculated intraperitone- 

 ally with 5 c.c. of blood from patient 814 (eighth day of ty- 

 phus). The subsequent temperatures were as follows: 



June 28 102.0 



" 29 No record 



30 102.4 



July 1 102.3 



tf 2 No record 



3 105.1 



4 102.9 



5 ".. 103.2 



" 6 No record 



7 102.1 



8 102.2 



9 No record 



10 102.7 



" 11 . . 102.8 



July 12 102.6 



13 103.1 



14 103.2 



15 No record 



16 102.2 



17 102.0 



18 102.1 



19 102.2 



20 101.8 



21 No record 



22 101.8 



23 102.0 



24 102.0 



25 . . 102.0 



There is no record of an autopsy. 



Result: Guinea-pig 44, inoculated with the viscera of louse 4 

 of Box xxxvn, during an observation period of thirty-four 

 days did not develop typhus fever. During a further observa- 



