SUBJECT INDEX 



Acid-forming organisms, 65. 

 Acid wastes, antiseptic effect of, 



20. 



Aesculin, 129. 

 Aesculin bile medium, 129. 

 Aesculin medium, preparation of, 



279. 



Aesculin test, 129. 

 Agar, drying of, 78. 

 Agar, for body temperature count, 



63. 



Agar, preparation of, 270. 

 Agglutination of typhoid bacilli, 



81, 82, 83. 



Anaerobic bacteria, 201. 

 Anaerobic spore-forming bacilli, 



211. 



Anglo-American procedure, 172. 

 Aniline dyes, use of, 77. 

 Antagonism, 16. 



Anthrax, occurrence in water, 98. 

 Apparatus, treatment of, 279. 

 Arbitrary standards, fallacy of, 51. 

 Atmospheric waters, 5. 

 Atypical colon bacilli, 135. 

 Azolitmin, 272. 



Bacillus, anaerobic spore-forming, 



211. 



Bacillus acidi lactici, 189. 

 Bacillus aerogenes, 189. 

 Bacillus alcaligenes, 94. 



Bacillus anthracis, 98. 

 Bacillus coli, 94, 99. 



cultural features, 100. 



discovery, 99. 



distribution in waters, 152. 



effect of temperature on, 113. 



fermentation reactions, 101. 



importance of numbers, 149. 



index of pollution, 219. 



in cold-blooded animals, 142. 



in ground waters, 113. 



in sewage, 230. 



in soils, 152. 



isolation of, 104, 132. 



isolation by Conradi-Drigalski 

 medium, 106. 



isolation by Endo medium, 106. 



isolation by synthetic media, 

 130. 



mutations in, 183. 



occurrence, 99. 



occurrence in animals, 140, 141. 



occurrence on plants, 146. 



pathogenicity, 100. 



positive isolations, no. 



preliminary enrichment of, 106. 



quantitative test, 138. 



standard tests for, 115. 



streak characteristics, 134. 



ubiquity of, 143. 



Bacillus coli and sewage strepto- 

 cocci, 205, 206. 



311 



