SAUNDERS' QUESTION-COMPENDS, No. 20 



ESSENTIALS 



OF 



BACTERIOLOGY 



BEING A 



CONCISE AND SYSTEMATIC INTRODUCTION TO THE 

 STUDY OF BACTERIA AND ALLIED MICROORGANISMS 



BY 



M. V. BALL, M.D. 



MEMBER OF THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA; CONSULTING 

 OPHTHALMOLOGIST AND JURIST TO THE STATE HOSPITAL AT WARREN, PA.; 

 WARREN COUNTY MEDICAL INSPECTOR FOR PENNSYLVANIA, DE- 

 PARTMENT OF HEALTH; FORMERLY INSTRUCTOR IN BAC- 

 TERIOLOGY AT THE PHILADELPHIA POLYCLINIC. 



SIXTH EDITION, THOROUGHLY REVISED 



With 135 Illustrations, some in Colors 



PHILADELPHIA AND LONDON 



B, SAUNDERS COMPANY 



J908 



