346 



INDEX 



Typhoid bacillus, 29, 234 



carriers, 235 



fever, 51, 229, 230, 244, 250, 261, 

 264 



transmission by flies, 238 



vaccine, 250 

 Typhus, prevention of, 238 

 Typical cell forms, 37 



Ultramicroscope, 230 

 Ultramicroscopic organisms, 230 

 Ultraviolet rays, 131 

 Unfavorable environment theory, 



252 

 Unit of antitoxin, 259, 260 



of measurement, 24 

 Universal carrier, 236 

 Unorganized ferments, 115 

 Unwashed articles, 154 

 Urea, 93 

 Urease, 111 



Urethral discharges, 244 

 Urine, bacteria in, 50 



as path of elimination, 243 

 Urticarial rashes, 291 

 Uschinsky's medium, 180 

 Use of agglutinins, 262, 263 



of vaccine, 282 



Vaccination in chicken cholera, 

 310 



negative phase in, 286 



in pneumonia, 237 



in smallpox, 249, 305, 313 

 Vaccine, 249 



age of, 284 



anthrax, 250 



antigens in, 282, 284 



autogenous, 283 



black-leg, 250 



deprivation of, 281 



hpo-, 283 



mixed, 284 



polj^alent, 284 



preservative in, 283 



sensitized, 270 



Vaccine, smallpox, 249 



standardization of, 283 



stock, 283, 284 

 Vaccines, bacterial, 281 



in colds, 237 



dosage of, 285 



in epidemics, 237 



failure of, 284, 285 



in infections, 285 



hpo-, 283 



preparation of, 282, 283 



standardization of, 282, 283 



stock, 283 



failure of, 284 



theory of, 285 



use of, 285, 299 

 Vacuoles, 26, 27, 28, 206 

 Vaginal discharges, 244 

 Van Helmont, 297 

 Variation with environment, 51 

 Varo, 304 

 Vaughan, 290 



and Novy's mass cultures, 185, 

 186 

 Vegetable toxins, 114 

 Vegetables, forcing of, 103 

 Vehicles, disinfection of, 154 

 Venoms, antisnake, 272 

 Verrucose slope cultures, 219 

 ViBORG, 305, 313 

 Vibration, mechanical, 60 

 Vibrations, high frequency, 60 

 Vibrio, 38, 312, 314 

 Vibrio, 47 



Vignal tubes, 186, 187 

 ViLLEMIN, 306, 314 

 Villous growth, 216, 218 

 Vinegar, 84, 85, 100, 311 

 Virulence, 231 

 Virus, 230 



filterable, 230 



fixed, 249 

 Vitamine deficiency, 246 

 Von Pirquet, 288 

 Vultures, 237, 238 



W 



Walker, 150 

 Wall, cell, 25 



composition of, 63 



