INDEX 



335 



Chloride of lime as a disinfectant, 147. 



Cholera, 297-299, 317. 



Cholera red reaction, the, 176. 



Chromatophorous bacteria, 191. 



Chromogenic bacteria, 190-197. 



Chromoparous bacteria, 191. 



Cider, aid of acetic acid bacteria in 

 making, 209. 



Cilia on bacteria, 29 ff . 



Cities, abundance of bacteria in air of, 

 291. 



Cladothrix group, 24. 



Cladothrix odorifera, 189. 



Classification of bacteria, 102-114, "Q- 

 120. 



Cocci, definition of, 15; dimensions of, 

 27-29; direction of division, in re- 

 production by fission, 43. 



Cohn, Ferdinand, 5, 30. 



Cold, slight value of, in destroying 

 bacteria, 78-79. See Temperature 

 and Thermal death point. 



Colonies of bacteria, 39-41. 



Colors in chromogenic bacteria, 190 ff. 



Comma bacillus, the, 19-20. 



Complement, substance called the, 

 262. 



Conidia, 22. 



Contagious diseases, 232-239. 



Cover-glass preparations, 94-95. 



Crenothrix polyspora, 188-189. 



Culture media, 66-76. 



Culture methods, 85-92, 132-133. 



Cultures, testing disinfection by, 154. 



Cyanophyceae (blue-green algae), re- 

 lationship of bacteria to, 122-123. 



Definition, of bacilli, 17; of bacteria, 

 117. 



Denitrifying organisms, class of bac- 

 teria called, 226-227; found in the 

 soil, 288. 



Dental caries, 326-327. 



Diamino acids, substances formed from, 

 by bacterial action, 222, 223. 



Digesting enzymes, 217-220. 



Dilution methods of isolation, 87-88. 



Dimensions of bacterial cells, 27-29. 



Diphtheria traced to milk supplies, 317- 

 318. 



Diplococci, 1 6. 



Diseases, infectious and contagious, 

 232-239; Koch's postulates estab- 

 lishing connection between microor- 

 ganisms and, 245 ; of plants, 274- 

 280; distribution of, by air-borne 

 bacteria, 291-292. See Milk and 

 Water. 



Disinfectants and disinfecting, 146-154. 



Disinfection, process of, 77 ff., 84; 

 test of, by means of cultures, 154. 



Distribution of bacteria, 282-332. 



Double stains, 100. 



Dunham's solution for study of bac- 

 teria, 71. 



E 



Ectoplasm layer of bacterial cell, 53-54. 



Eggs as a culture medium, 72. 



Electricity, effect of, on bacteria, 159 

 162. 



Endospores. See under Spores. 



Endotoxins, 249, 254-255. 



Entoplasm, the, 54. 



Environment, effect of, on bacteria, 

 127-164. 



Enzymes, bacterial, and their mechan- 

 ism of action, 176-180; autolytic 

 bacterial, 181-182 ; and ferments, 

 202-206; proteolytic, 217-220; im- 

 munization of animals with, result- 

 ing in antienzymes, 265. 



Epidemics, 295-299; caused by milk 

 supplies, 316-318. 



Esmarch roll, the, 89. 



Eubacteria, 15, 104; suborders of, 105- 

 iii. 



Eury thermic organisms, 138. 



Exhaustion theory of immunity, 272. 



External conditions, bearing of, on 

 bacteria, 127-164. 



Facultative parasites and saprophytes, 



228-229. 

 Fermentation, an enzyme process, 202- 



204; organized and unorganized 



