BACTERIOLOGY OF THE CITY or BOSTON BY M. L. DHINGRA, M.D., C.M. EDIN. DIPLOMATE IN STATE Medicine, UNIVERSITY Of Cambridge WITH COLOURED FRONTISPIECE AND ILLUSTRATIONS IN THE TEXT LONGMANS, GREEN, AND CO. 39 PATERNOSTER ROW, LONDON NEW YORK AND BOMBAY TO THE MEMORY OF R. D. WHOSE CONSTANT SYMPATHY AND ENCOURAGEMENT ENABLED ME TO WRITE THESE PAGES I GRATEFULLY DEDICATE THIS WORK |