INDEX 



319 



Preservatives, 177-188; commer- 

 cial, 179; nonpoisonous, 182; of 

 milk, 213; poisonous, 177; spices 

 as, 187 



Protection of fruit from decay, 62 



Proteids, bacteria and, 139, 143 



Protozoa, 31 



Ptomaine poisoning, 226 



Ptomaines, 224 



Putrefaction, 24, 49-50, 146 



Rabies, Pasteur and, 17-19 

 Raising of bread, 90, 91, i04-ir3 

 Rapidity of growtb of bacteria, 125 

 Redi, Francesco, 7 

 Refrigeration in home, mechanical, 



169; by ice, 171 

 Resistance against disease, 231 

 Ringworm, 70, 71, 263 

 Roquefort cheese, 5T, 70; molds 



and, 26, 48, 51 

 Roux, £mile, 20 



Saccharomyces cerevisise, 97 



Salicylic acid, 178 



Salt as preservative, 184 



Salt raising and yeasts, 93 



Saprophytes, 140, 142-227 



Sarcina, 122 



Sauerkraut, 186, 222, 223 



Sealing, hermetical, 196 



Secretions of bacteria, 147 



Septicaemia, 228 



Sewage, 259, 274 



Sick room, treatment of, 273, 292 



Silkworm, disease of, 13-14 



Skin, bacterial invasion through, 262 



Slimy bread, in 



Slimy milk, 205 



Smallpox, vaccination for, 14 



Soil, bacteria in, 13s 



Source of milk, 206 



Souring, 24, in 



Spallanzani, 9 



Spices as preservatives, 187 



Spontaneous generation, 7 ; Pasteur 

 and, 10 



Spore formation of bacteria, 124 



Spores, bacterial, 125; of Aspergil- 

 lus, 39; of mold, 37; of mold. 



germination of, 42; of Penicil- 



Bum, 3S ; of yeast, 80 

 Starches and bacteria, 139, 142 

 Sterilization, 129, 191 ; of milk, 



213 

 Stilton cheese, molds and, S'l 7° 

 Streptococcus, 122 

 Sugars and bacteria, 139, 142 



Temperature, bacteria and, 127; 



keeping of milk and, 211 ; molds 



and, 56; yeast and, 107 

 Tetanus, 264 ; bacillus of, 263 

 Toxin, diphtheria, 20 

 Toxin-antitoxin, diphtheria, 278 

 Toxins, 229 

 Trichina, 163 



Tuberculosis, bacillus of, 257 

 Typhoid fever, flies and, 246 ; water 



and, 247, 248 

 TjT)hoid-fever bacillus, 247 

 TVphoid vaccination, 278 



Unleavened bread, 91 



Vaccinadon, 276; for anthrax, 14; 

 for smallpox, 14 ; for tj^phoid, 278; 

 Jenner and, 14 



Vegetables, canned, mold and, 55 



Vinegar, 90, 149, 221 ; as preserva- 

 tive, 185; bacteria producing, 

 151 ; mother of, 150 



Vinegar eels, 152 



Vitamines, 185, 201, 219; yeast and, 

 8S 



Water, Asiatic cholera and, 247, 248 ; 

 bacteria in, 133; distribution of 

 disease by, 247 ; filtering of, 249 ; 

 typhoid fever and, 247, 248 



Wine, fermentation of, 3 



Wines, homemade, 89 



Yeast, brewer's, 100; compressed, 

 97; dried, 99; food required by, 

 84; impurities in, 109; methods 

 of obtaining, 93 ; spores of, 80 ; 

 temperature and, 107; vitamins 

 and, 85 ; wild, 81, 82 



Yeast brews, loi 



