INDEX 



Abiogenesis, 8-13. 



Acetic acid bacterium, 172. 



Acetic acid fermentation, 208-209. 



Acid-fast bacteria, 98. 



Acids, fermentation of the fatty, 211- 

 212 ; produced by bacteria, 174-175 ; 

 which are produced by action of 

 bacterial enzymes of saprogenic bac- 

 teria, 222. 



Aerobes, class of bacteria known as, 131 ; 

 obligate and facultative, 132. 



Aerotropism, 141. 



Agar as a culture medium, 74-75. 



Agglutinins, 262-263. 



Agglutinoids, 263. 



Air, bacteria of the, 289-292. 



Alcohol, bacterial pigments soluble in, 

 195 ; insoluble in, 195-196. 



Alcohols produced by process of fer- 

 mentation, 206 ; fermentation of the 

 higher, 211-212. 



Algae, relationship between fungi and, 

 121; relationship of bacteria to the 

 blue-green, 122-123; relationship of 

 bacteria to the true, 123. 



Alkalies produced by bacteria, 175. 



Amboceptor, or immune body, 262. 



Amino acids of fatty acid series, 222. 



Amphitrichous class of flagellate bac- 

 teria, 31. 



Anabolism vs. catabolism, 166 ff. 



Anaerobes, 31 ; obligate and faculta- 

 tive, 132. 



Anaerobic culture methods, 132-133. 



Analysis of water for bacteria, 299-301. 



Anaphylaxis to bacterial proteins, 257. 



Anilin dyes for staining, 6, 95-96. 



Animal kingdom, question of classify- 

 ing bacteria in, or in vegetable king- 

 dom, 115-116. 



Animal life, spontaneous generation 

 theory, 8-13. 



Antagonism between species of bacteria, 



164. 



Anthrax bacillus, size of, 29. 

 Antibacterial substances, 261-262. 

 Antienzymes, 182, 265-267. 

 Antiseptic action of chemical sub- 

 stances, 146 ff. 

 Antiseptics, chemicals which are, 146- 



154; action of, on fermentation, 



205. 



Antiserums, 266. 

 Antitoxins, 258-261, 265-266. 

 Aromatics, fermentation of the, 211- 



212. 



Arthrospores, 50. 

 Arts, bacterial fermentations in the, 



214-215. 

 Asiatic cholera, 297-299; carried by 



milk, 317. 



Assimilation, 165, 166. 

 Association, bacteria affected by, 164. 

 Autoclave, the, 82-83. 

 Autolysis of bacteria, 181-182. 

 Autolytic bacterial enzymes, 181-182. 



B 



Babes-Ernst granules, 58. 



Bacilli, defined, 17. 



Bacillus dentrificans, dimensions of, 29. 



Bacillus prodigiosus, history of, 196- 

 197. 



Bacteria, discovery and history of the 

 study of, 2-7 ; morphology of, 14 ff . ; 

 form and structure of, 14-41 ; two 

 orders and two suborders of, 15 ff. ; 

 lower bacteria, 15-21; higher, 21- 

 24 ; involution forms among, 24-27 ; 

 dimensions of, 27-29; average 

 weight of, 29 ; locomotion of, 29-35 ; 

 four classes of flagellate bacteria, 3 1 ; 

 rapidity of movement of, 35; cap- 

 sules surrounding, 35-37; mass 



333 



