BACTERIOLOGY BY M. L. DHINGRA, M.D., C.M. EDIN. DIPLOMATE IN STATE MEDICINE, UNIVERSITY OF CAMBRIDGE MEMBER OF THE SANITARY INSTITUTE, ETC. WITH COLOURED FRONTISPIECE LONGMANS, GREEN, AND CO. NEW YORK AND BOMBAY TO THE MEMORY OF TR. Đ. WHOSE CONSTANT SYMPATHY AND ENCOURAGEMENT ENABLED ME TO WRITE THESE PAGES I GRATEFULLY DEDICATE THIS WORK |