76 SPECIFICITY OF RICKETTSIA PROWAZEKI 



Three guinea-pigs, Nos. 71, 72, and 73, were inoculated intra- 

 peritoneally each with 3 c.c. of blood from the heart of 

 guinea-pig 26. 



Guinea-pigs 71 and 73 developed high temperatures, 

 105.8 F. and 106 F. on the ninth and eighth days respectively. 

 No. 71 died June 14th and autopsy showed peritonitis and 

 active pseudo-tuberculosis. No. 73 was killed on June 20, up to 

 which time the temperature remained high. Autopsy showed 

 fibrinous peritonitis and active pseudo-tuberculosis. The his- 

 tological examination of the brain was completely negative. 



Guinea-pig 72 survived the inoculation and ran the following 

 course of temperature: 



F. F. 



June 6 102.8 June 18 102.6 



7 103.0 19 102.6 



8 103.6 20 No record 



9 102.3 21 102.4 



10 102.4 22 No record 



11 103.0 23 102.4 



12 103.2 24 102.2 



13 102.8 25 102.6 



14 104.0 26 No record 



15 102.4 27 No record 



" 16 No record 28 102.6 



17 No record 



On June 28th, preparatory to our departure from Warsaw, 

 this guinea-pig was inoculated intraperitoneally with 5 c.c. of 

 blood from patient 814 (eighth day of typhus). 



The subsequent temperatures were as follows: 



F. F. 



June 28 102.6 July 8 102.0 



" 29 No record " 9 No record 



" 30 102.4 10 102.6 



July 1 102.2 11 102.7 



2 No record 12 102.8 



3 103.8 " 13 102.0 



4 104.5 14 103.0 



5 104.0 15 No record 



6 No record 16 102.9 



7 102.4 17 102.8 



There is no record of the fate of this guinea-pig. The obser- 

 vations were concluded preparatory to departure from Paris. 



