VOLUME VI NUMBER 5 



JOURNAL 



OF 



BACTERIOLOGY 



OFFICIAL ORGAN OF THE SOCIETY OF AMERICAN 

 BACTERIOLOGISTS 



SEPTEMBER, 1921 



EDITOR-IN-CHIEP 



C.-E. A. WiNSLOw 



It ia characteristic of Science and Progress that they continually 

 open new fields to our vision. — Pasteur. 



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Copyright 1921, Williams and WilJdns Company 



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