SULPHUR BACTERIA 



A MONOGRAPH 



BY 



DAVID ELLIS 



D.Sc. (LOND.), Ph.D. (Marburg), F.R.S.E. 



PROFESSOR OF BACTERIOLOGY, THE ROYAL TECHNICAL COLLEGE, GLASGOW 



WITH ILL USTRA TIONS 



LONGMANS, GREEN AND CO. 

 LONDON ♦ NEW YORK ♦ TORONTO 



1932 



