Index 



439 



Vaccine, rabies, 323 

 smallpox, 320-321 

 T.A.B., 344 

 typhus, 391 



Vaccinia virus, 399, 404 



V^alley, G. W., 140 



van Ermengem, 341 



van Helmont, J. B., 23, 24 



van Leeuvvenhoek, A., 4, 8, 54 

 description of yeasts, 370 

 father of microbiology, 9, 12 

 life history of, 9-17 

 microscopes developed by, 10 



Varicella, 406 



Varro, M., 7, 37 



Vectors of rickettsiae, 384 



Vegetative cells, 101 



Venus, 334 



Vergil, P., 22-23 



Viable bacterial counts, 146-153 



Vibrio, 54 



Virology, 50 



Virulence, definition of, 295 



Viruses, 20, 392-407 



characteristics of, 393-396 

 classification of, 393 

 cultivation of, 396-399 

 diseases caused by, 399-406 

 historical review of, 392-393 

 immunity induced by, 406 

 laboratory diagnosis of, 406-407 

 viscerotropic, 394 



Vitamins in yeasts, 374-375 



Voges-Proskauer test, 127, 133 



Volutin, 359 



von Decastello, 409 



von Dusch, 27 



von Liebig, J., 33, 35 



von Linne, C., 54 



von Prowazek, 379 



Waksman, S. A., 267, 273 

 Walter, W. G., 150, 236, 243 

 Wastes, disposal of, 249-250 

 Water, 219-237 



definitions of, 220 



sources, 221-225 



standard bacteriological analysis of, 

 233-237 



Water, swimming pool, 230-231 



Wedberg, S. E., 175, 351, 352 



Weichselbaum, 336 



Weigert, C., 108 



Weight of bacteria, 92-93 



Weil-Felix reaction, 389-390 



Wells 



determining capacity of, 222 



driven, 222 



dug, 221, 226-227 

 Whooping cough, see Hemophilus 



pertussis 

 Widal test, 343 

 Wiener, 413 

 Wilhams, 352 

 Wilson, J. B., 99, 244, 246 

 Winslow, C.-E. A., 55, 263 

 Witton, C. J., 400 

 Wood ticks", 384 

 Wool-sorter's disease, 340 

 Wren, C., 12 

 Wright's smear, 144 



Xenopsylla cheopis, 354, 386 



Yeast cakes, 374 

 Yeasts 



bottom, 375 



budding, 372 



classification of, 370-371 



definition of, 369 



distribution in nature, 374 



economic importance of, 374 



in disease, 376-377 



morphology of, 371 



pH limits for growth of, 69 



reproduction of, 371 



spoilage caused by, 376 



top, 375 

 Yellow fever, 394 

 Yersin, 181 



Ziehl-Neelson stain, 113 

 Zinsser, H., 385 

 Zobell, C., 166 

 Zoophagineae, 403 

 Zygospores 



in molds, 360-361 



in yeasts, 371 



