MICROBIOLOGY 



A TEXT-BOOK OF 

 MICROORGANISMS GENERAL AND APPLIED 



CONTRIBUTORS 



F. T. Bioletti, Berkeley, California. 

 R. E. Buchanan, Ames, Iowa. 

 M. Dorset, Washington, D. C. 

 S. F. Edwards, Lansing, Michigan. 



E. Fidlar, London, Ontario. 



W. D. Frost, Madison, Wisconsin. 

 A. Guilliermond, Lyons, France. 

 N. MacL. Harris, Chicago, Illinois. 



F. C. Harrison, MacdonaU College, Qui 

 E. G. Hastings, Madison, Wisconsin. 

 H. W. Hili, London, Ontario. 



W. E. King, Detroit, Michigan. 



J. G. Lipman, New Brunswick, New 



•W. J. MaoNeal, New York. 'New York. 



B. F. McCampbell, Columbus, Ohio. 

 Z. Northrup, East Lansing, Michigan, 

 E. B. Phelps, Washington, D. C. 



O. Ralin, Elbing, Germany. 

 L. F. Rettger, New Haven, Connecticut. 

 M. H. Reynolds, University Farm, St. Paul, 

 Minnesota. 

 ':, Canada. W. G. Sackett, Fort Collins, Colorado. 

 W. A. Stocking, Ithaca, New York. 



C. Thorn, Washington, D.C. 

 J. L. Todd, Montreal, Quebec. 



Jersey. E. E. Tyzzer, Boston, Massachusetts. 



EDITED BY 



CHARLES E. MARSHALL 

 Amherst, Massachusetts 



PROFESSOR O? MICROBIOLOGY AND DIRECTOR OF GRiDUATE SCHOOL 

 MASSACHUSETTS AGRICULTURAL COLLEGE 



SECOND EDITION REVISED AND ENLARGED 

 WITH 186 ILLUSTRATIONS 



PHILADELPHIA 



BLAKISTON'S SON & CO. 



1012 WALNUT STREET 



