Skin, channel of infection, 243 diseases, 243 glanders, 248 lesions, 228 pocket, 227 Slant cultures, 186 Slide, cleaning of, 207 hanging drop, 203 staining on, 207 Slope cultures, 186 Sludge tanks, 116 Small intestine, 249 Smallpox, 24, 26, 34, 239, 246, 248 babies, 252 vaccines, 253 SMITH, 289 tubes, 184 Snake poisons, 263, 275 venoms, 128 Sneezing, 248 Soap, 160 medicated, 160 Society of American Bacteriologists, classification, 63 descriptive chart, 217 key, 68 Sodium hypochlorite, 158 Soil, acid, 81 bacteria, 119 bacteriology, 35 enrichment, 117 fertility, 120 organisms, 74 Solid media, 172, 173 Solution, Gram’s, 208 stock, 205 Sore throat, 240, 241 Sound, 80 Sour mash, 98 Source of complement, 277 Souring, 98 SPALLANZANI, 20, 31, 34 Species determination, 59, 60 Specific amboceptor, 274, 278, 279 antibody, 291 chemical stimuli, 257, 258, 259 disease, 27, 30, 233 Specificity of agglutinins, 267 of amboceptor, 274 of location, 249 of opsonins, 281 Spermotoxin, 272 Spherical form, 52 _Spherotilus_, 63 _Spirillaceæ_, 63, 65 Spirilloses, 241, 242 _Spirillum_, 53, 54, 55, 61, 63, 66, 68, 69 _rubrum_, 113 _Spirochæta_, 61 _obermeieri_, 29, 35 Spirochetes, 53, 242 _Spirosoma_, 63 Splenic fever, 28 Split products of proteins, 291 Splitting enzymes, 124 of fats, 101 Spoilage of canned goods, 51, 78 Spoiling of food, 91 Spontaneous combustion, 105, 116 generation, 17-24, 33, 34 outbreaks of disease, 239 Sporangia, 226 Spore, 47-51 anthrax, 29, 35 capsule, 48 germination, 48 Spores, cause spoiling of canned goods, 51 destroyed by boiling, 133 first recognized, 33, 35 light on, 75 in pasteurization, 146 resistance of, 50, 51 staining of, 209 two in bacterium, 50 Sprinkling filters, 116 Stab cultures, 185 Stables, disinfection of, 167 Stain, anilin fuchsin, 205 gentian violet, 205 aqueous gentian violet, 205 Bismarck brown, 212 carbol fuchsin, 206 contrast, 205 Gabbet’s blue, 206 Loeffler’s blue, 206 Neisser’s, 212 Staining, 204-212 acid-fast bacteria, 209 bottles, 206 capsules, 210 cell forms, 212 groupings, 212 flagella, 210 Gabbet’s method, 209 Gram’s method, 208 metachromatic granules, 212 Neisser’s method, 212 Räbiger’s method, 210 reasons for, 204 sections, 209 spores, 209 Welch’s method, 210 Ziehl-Neelson, 210 Standard antitoxin, 264 methods, 217 test dose, 264 toxin, 264 Standardization, colorimetric method, 175 of culture media, 174 of disinfectants, 165 H-ion method, 175 of vaccines, 284 Staphylococcus, 57, 58 _Staphylococcus_, 66, 68, 69 STARIN, 196