CONTENTS 



Introduction 1 



Historical Survey of Classifications 5 



How Bacteria are Named and Identified 39 



Rules of Nomenclature 49 



Class Schizomyceies Nageli 65 



Order I. Eubacteriales Buchanan 66 



Suborder I. Eubacteriineae Breed, Murray and Hitchens 67 



Family I. Nitrobacteriaceae Buchanan 69 



Tribe I. Niirobacterieae Winslow et al 70 



Genus I. Nitrosomoyias Winogradsky 70 



Genus II. Nilrosococcus Winogradsky 71 



Genus III. Nitrosospira Winogradsky 71 



Genus IV. Nitrosocystis Winogradsky 72 



Genus V. Nitrosogloea H. Winogradsky 73 



Genus VI. Nitrobacter Winogradsky 74 



Genus VII. Nitrocystis H. Winogradsky 75 



Tribe II. Hydrogenomonadeae Pribram 76 



Genus I. Hydrogenomonas Orla-Jensen 76 



Tribe III. Thiobacilleae Bergey, Breed and Murray 78 



Genus I. Thiobacillus Beijerinck 78 



Family II. Pseudomonadaceae Winslow et al 82 



Tribe I. Pseudomonadeae Kluyver and Van Niel 82 



Genus I. Pseudomonas Migula 82 



Genus II. Xanthomonas Dowson 150 



Genus III. Methanomonas Orla-Jensen 179 



Genus IV. Acetobacter Beijerinck 179 



Genus V. Protaminobacter den Dooren de Jong 189 



Genus VI. Mycoplana Gray and Thornton 192 



Tribe II. Spirilleae Kluyver and Van Niel 192 



Genus I. Vibrio Miiller 192 



Genus II. Desulfovibrio Kluyver and Van Niel 207 



Genus III. Cellvibrio Winogradsky 209 



Genus IV. Cellfalcicula Winogradsky 211 



Genus V. Thiospira Vislouch 212 



Genus VI. Spirillum Ehrenberg 212 



Family III. Azotobacteriaceae Bergey, Breed and Murray 219 



Genus I. Azotobacter Beijerinck 219 



Appendix : Genus A. Azotomonas Stapp 221 



Family IV. Rhizobiaceae Conn 223 



Genus I. Rhizobium Frank 223 



Genus II. Agrobacterium Conn 227 



, Genus III. Chromobacterium Bergonzini 231 



Family V. Micrococcaceae Pribram 235 



Genus I. Micrococcus Cohn 235 



Appendix: Genus A. Methanococcus Kluyver and Van Niel 248 



Genus B. Pediococctis Balcke 249 



XI 



7ij 



