VOLUME VI NUMBER 4 



JOURNAL 



OF 



BACTERIOLOGY 



OFFICIAL ORGAN OF THE SOCIETY OF AMERICAN 

 BACTERIOLOGISTS 



JULY, 1921 



EDITOR-IN-CHIEF 



C.-E. A. WiNSLOw 



// is characteristic of Science arid Progress that they continually 

 open new fields to our vision. — Pasteur. 



PUBLISHED BI-MONTHLY 



WILLIAMS & WILKINS COMPANY 



BALTIMORE, U. S. A. 



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Act of October 3. 1917. Authorised on July 16, 1918. 



Copyright 1921, Williama and WiUdns Company 



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