318 



INDEX 



Adulteration of food, immunity 

 reactions in, 251 

 precipitin test in, 265 

 Aedes, 238 

 Aerated sludge, 102 

 Aetobes, facultative, 56 



strict, 56 

 Aerobic, 56, 212 

 Agar, composition of, 175 



gelatinizing temperature, 176 



medium, preparation of, 176 



melting point of, 175 



plating in, 185 



sterilization of, 176 

 Agents, chemical, for disinfection, 

 142-148 



choice of, for disinfection, 149 



physical, for disinfection, 117 

 Agglutinating group, 262 

 Agglutination, 261 



acid, 262 



diagnostic value of, 262, 263, 264 



in identification of bacteria, 263, 

 264 



macroscopic, 261 



microscopic, 261 



phenomenon, 261 

 Agglutinin, 261 



abortion, 261 



absorption test for, 263 



action of, 262 



anti-, 266 



antigenic action of, 266 



bacterial, 261 



chief, 263 



CO-, 263 



function of, 262 



glanders, 261 



hem-, 261 



normal, 262 



partial, 263 



relation to precipitins, 265 



specificity of, 263 



theory of formation, 261 



typhoid, 261 



use of, 262 

 Agglutinogen, 262 

 Agglutinoid, 266 

 Aggressins, 287 

 Aids to isolation, 195 

 Air, bacteria in, 49 



filtration of, 139 



Air, "germ free," 139 

 Albumin in bacteria, 64 

 Alcaligenes abortus, 261 

 Alcohol, antiseptic, 146 



butyl, 86 



disinfectant, 146 



oxidation of, 100 



production of, by bacteria, 96 

 by yeasts, 85, 86 

 Alcoholase, 110, 111 

 Alcoholic fermentation, 85, 311, 



313 

 Aldehydes, production of, 96 

 Alexin, 267, 269 



Algae, relation to bacteria, 18, 19 

 Alimentary tract as path of en- 

 trance, 242 

 Alkah, per cent of, 160 

 Alkalies as disinfectants, 144 

 Allergic, 289 

 Allergie, 289 

 Allergy, 289 

 Aluminum, 62 

 Amboceptor, 269 



anti-, 272 



anticomplementophil, 272 



anticytophil, 272 



chief, 270 



CO-, 270 



in cobra, 272 



formation of, 269 



hemolytic, 275 



partial, 270 



in rattlesnake, 272 



specificity of, 270, 274 



theory of formation, 269 



test, "unknown," 274 

 Amboceptorogen, 270 

 Ameba, 309 



Amebic dysentery, 309, 315 

 Ameboid cells, 243 



colonies, 221 

 Amino-acids, formation of, by bac- 

 teria, 92 



relation to green plants, 106 

 Ammonia, formation of, 90, 93 



oxidation of, 92, 95, 100 



reduction to, 99 



structural formula, 90 

 Ammoniacal fermentation, 311 

 Amoeba coli, 309, 315 

 Amphitrichic, 30 



