Table exhibiting the Bactericidal Eftect produced by one and the same Serum (a) drawn off and tested by the Aerobic Procedure described in Section I ; and (//) drawn off and tested by the Anaerobic Procedure described in Section II. 



Dilutions in which 

 the culture was 

 employed. 



Capillary testing pipettes wer 



e filled in with — 



1 vol. A. E. W.'s serum. ' 



1 vol. of a typhoid 

 culture, containing 

 156,000,000 T.B. per ] 



c.c. 



1 vol. W. B. L.'s serum. 



1 vol. of a typhoid j 

 culture, containing 

 156,000,000 T.B. per 

 c.c. 



1 vol. F. N. W.'s serum. 



1 vol. of a typhoid 

 culture, containing 

 156,000,000 T.B. per 

 c.c. 



1 vol. A. E. W.'s serum. 



1 vol. of a typhoid 

 culture, containing 

 120,000,000 T.B. per 

 c.c. 



1 vol. F. N. W.'s serum. 



1 vol. of a typhoid 

 culture, containing 

 150,000,000 T.B. per 



1 vol. A. E. W.'s serum. 



1 vol. of a typhoid 

 culture, containing 

 100,000,000 T.B. per 

 c.c. 



1 vol. A. B.'s serum. 

 1 vol. of a typhoid 

 I culture, containing 

 220,000,000 T.B. per 



1 vol. J. N.'s serum. 



1 vol. of a typhoid 

 culture, containing 

 540,000,000 T.B. per 



1 vol. A. E. W.'s serum. 

 1 vol. of a cholera 



culture, containing 

 i 18,000,000 cholera 



vibrios per c.c. 



1 vulture, containing 

 60,000,000 cholera 

 vibrios per e.c. 



Aerobic 

 procedure. 



Anaerobic | 

 procedure. 



Aerobic 

 procedure. 



Anaerobic 

 procedure. 



Aerobic 

 procedure. 



Anaerobic 

 procedure. 



Aerobic 

 procedure. 



Anaerobic 

 procedure. 



Aerobic 

 procedure. 



Anaerobic 

 procedure. 



Aerobic 

 procedure. 



Anaerobic 

 procedure. 



Aerobic 

 procedure. 





A i cobio 







Anaerobic 

 procedure. 



Aerobie ] Anaerobic 

 procedure, procedure. 



















Undiluted. 



















Growth 



Growth 



_ 















Growth 



Growth 



, 



Growth Growth 



2-fold dilution . . 























Growth. 



Growth 







Growth 



Growth 



Sterilo 



Sterile 





5 » 



Sterile 



Sterile 



Growth 



Sterile 



Growth 



Growth 



Growth 



Growth 

















Sterile 











10 i> 



" 





Sterile 







Sterile 











Sterile 





Growth 



Growth 











I 



25 



50 » 



" 













Sterile 



Sterile 



Sterile 



Sterile 









Sterile 



Sterile 











Sterile Sterile 



100 ii •• 















Growth 





























1,000 » 















Sterile 



























., 



: lo.ooo .. 











































100,000 











































A. E. W. had been inoculated against typhoid ; W. B. L., F. N. W., and A. B, were normal men ; J. N. had recently convalesced from typhoid. 



The sera were in each case tested within 2—3 hours after the blood had been withdrawn. The culture were in all cases aerobically grown 21-hours-old broth cultures. 



The serum was iu each case allowed to act upon the culture for 18—21 hours nt a temperature of 37 C. 



