208 N. S. FERRY AND ARLYLE NOBLE 



8. When B. hronchisepticus antiserum is absorbed with Bad. 

 pertussis, agglutinins for Bad. pertussis are removed, but agglu- 

 tinins for B. hronchisepticus are unaffected. 



9. When Bact. pertussis antiserum is absorbed with Bact. per- 

 tussis, agglutinins for that organism are removed. 



10. When Bact. pertussis antiserum is absorbed with B. 

 hronchisepticus, agglutinins for Bact. pertussis are unaffected. 



11. The similar morphology, the identical cultural reactions 

 on differential media, the presence of Bact. pertussis agglutinins 

 in artificially produced antibronchisepticus serum and in serum 

 from dogs and rabbits suffering or recovered from distemper, all 

 point toward a close relationship between Bact. pertussis, the 

 cause of whooping cough and B. hronchisepticus, the cause of 

 distemper. 



REFERENCES 



BoRDET, J. AND Sleeswyk 1910 Serodiagnostic et variabilite des microbes 

 suivant le milieu de culture. Ann. d. I'Inst. Pasteur, 24, 476. 



Ferr, N. S. and Klix, H. 1917 Studies relative to the apparent close rela- 

 tionship between Bact. pertussis and B. bronchisepticus. II. Comple- 

 ment fixation tests (in press). 



Mallory, F. B. and Hornor, A. A. 1912 Pertussis: The histological lesion in 

 the respiratory tract. J. Med. Research 27, 115. 



Mallory, Hornor and Henderson 1913 The relation of the Bordet-Gengou 

 bacillus to the lesions of pertussis. J. Med. Research 27, 391. 



Mallory, F. B. 1913 The pathological lesion of whooping cough. Boston 

 M. & S. J. 169, 575. 



PoviTZKY, Olga R. and Worth, E. 1016 Agglutination in pertussis. Archives 

 Int. Med. 17, 279. 



