724 



INDEX OF SUBJECTS. 



Vaccine, kinds of, 468, 477, 478, 480 



manufacture of, 687 



rabies, 473 



smallpox, 470 



tuberculosis, 478 

 Variation, physiological, 104 

 Vegetables, 462 



pickles, 462 



sauerkraut, 462 

 Vegetation, influence on organisms in 



water, 202 

 Vinegar, acetic fermentation, 448 



after-treatment of, 458 



apparatus for manufacture of, 453 



bacteria, 448 



cultures for, 453 



diseases of, 459 



domestic method, 453 



fermentation of, 452 



German method, 456 



manufacture of, 448 



Orleans method, 454 



Pasteur method, 455 



raw materials of, 451 



rotating barrel method, 458 



starters for, 453 

 Virulence of infection, 532 

 Virus, 469 



WASSERMAN'S test, 563 

 Water, analysis (qualitative and quanti- 

 tative), 203, 204 



B. coli in, 195 



enteritidis in, 195 

 typhosus in, 196 



bacteria of natural, 193 



Bact. lactis aero genes in, 195 



-borne infections, 196, 525 



classes of bacteria in, 193 



coagulating basins, 206 



decrease of organisms in, 201 



dilution of, 202 



filters, 205, 207 



nitrations, 205, 206 



food influences, 201 



from hail, germ content, 199 



increase of organism in, 201 



lake, germ content, 200 



light, influence of, 201 



microorganisms in, 192 



Microspira comma in, 196 



oxidation, influence on germ content, 

 202 



protozoa, influence on germ content 

 202 



purification by, chemicals, 208 

 heat, 208 



Water, ozone, 207 



from rain, germ content, 198 



from rivers, germ content, 200 



sea water, germ content, 201 



sedimentation of, 205 



sewage strep tococcic, 194 



from snow, germ content, 199 



soil bacteria in, 194 



supply for dairy, 303 



surface washings in, 194 



temperature influence in, 201 



in upland surface, 200 



vegetation, influence on germ con- 

 tent, 202 



from wells, germ content, 199 

 Weight of bacteria, 89 

 Wells, construction of, 210 



location of, 208 



microorganisms in, 199 

 Wine, 



acetic bacteria in, 423 



aerobic organisms in, 423 



anaerobic organisms in, 424 



butyric bacteria in, 426 



composition of, 418 



control after fermentation, 432 

 of fermentation, 427 

 on grapes, 427 



defined, 418 



fortified, 419 



lactic bacteria- in, 425 



mannitic bacteria in, 425 



as medium for cultivation, 418 



microorganisms in, 423 



mycodermae in, 423 



propionic bacteria in, 425 



slime-forming bacteria in, 424 



X-RAYS 165 



YEAST, in beer, 435 



in bread, 460 



cell of, 29 



classification of, 28 



compressed, 460 



culture of, 34 



differentiation of, 36 



of ginger beer, 443 



on grapes, 420 



important, 31 



morphology of, 28, 29 



of pombe, 34 



pseudo-, 34 



of vinegar, 448 



of wine, 429 

 Yohourth, 369 



ZYGOSPORE, 14 



