294 



BACTERIA, YEASTS, AND MOLDS 



Salt raising of bread, 75. 



Salt used in drying meat, 144. 



Sanitary, dairies, 186; milk, 229. 



Saprophytes, 122, 124, 203. 



Sarcina, 104. 



Sauerkraut, 166, 198. 



Sausages, 167. 



Scarlet fever, 212, 213, 219, 221, 



227, 230, 236, 242, 245, 249. 

 Schoolrooms, bacteria in, 115. 

 Scotch barms, 76. 

 Scrofula, 254. 

 Scurvy, 165. 



Secretions from bacteria, 129. 

 Seeds, preservation of, 141. 

 Seltzer water, 226. 

 Septicaemia, 203. 

 Sewage, 116, 222, 247; farms, 234; 



gas, 248. 

 Shellfish, drying of, 145. 

 Sick room, disinfection of, 265 ; 



treatment of, 246. 

 Sink, care of, 138. 

 Siris, 67. 

 Skin, a means of invasion, 235 ; a 



protection, 236 f diseases, 230; 



value of clean, 47. 

 Slacked lime, 261. 

 Slimy, bread, 92 ; milk, 184. 

 Smallpox, 219, 221, 230, 236, 242, 



253- 

 Smuts, 10. 



Soil, bacteria in, 117. 

 Sour bread, 92. 



Sour milk, bacteria in, 119, 184. 

 Souring of foods, 4. 

 Sparkling wines, 96. 

 Spherical bacteria, 104. 

 Spices as preservatives, 167. 

 Spiral bacteria, 105. 



Spoiling of foods, i, 2, 118. 



Spontaneous fermentation, 64. 



Sporangia, 19. 



Spores, 17, 37, 106, 257 ; germina- 

 tion of, 22 ; of yeast, 62 ; resist- 

 ance of, to heat, 107, iii, 172. 



Spring houses, 155. 



Spring water, bacteria in, 116. 



Sputum a source of infection, 220, 

 232. 



Starch as bacterial food, 121, 124. 



Sterilization, iii, 229; before can- 

 ning, 171; of milk, 5, 191, 192; 

 purpose of, 192. 



Stilton cheese, 31, 52. 



Stomach, bacteria in, 1 19. 



Streptococcus, 104. 



Stysanus, 21. 



Sugar, a bacterial food, 121, 1 24 ; 

 as a preservative, 66, 162; in 

 fruits, 146. 



Sulphur as a disinfectant, 261, 267. 



Summer diarrhea, 200, 227. 



Sunlight as a disinfectant, 258. 



Sweeping, 120. 



Tassajo, 144. 



Temperature, effect of, on decay of 



fruit, 48 ; effect of, on milk, 189 ; 



effect of, on molds, 36 ; relation 



of, to bread raising, 89 ; relation 



of, to growth, 109. 

 Tetanus, 237. 

 Toadstools, 10. 

 Tomatoes, canning of, 172, 174, 



180. 

 Torula, 62. 

 Toxic poisoning not a disease, 



205. 

 Toxins produced in the body, 204. 



