496 



INDEX 



Sewage — 



irrigation of, 161 



intermittent filtration, 160 



eifluents and pathogenic organisms, 

 175 



London treatment of, 164 



Manchester treatment of, 170 



Sutton treatment of, 169 



Exeter treatment of, 165 



septic tank method of treating, 165- 

 169 



contact bacteria beds method, 169 



Leicester treatment of, 173 



effect of bacterial treatment of, 

 175 

 Sewer air, 82 



and toxicity of bacteria, 83 

 Shake cultures, 467 

 Shell-fish and bacteria, 253-266 

 Sleeping sickness, 403 

 Small-pox, 416 

 Smith, Graham, on air of House of 



Commons, 88 

 Smith, Horton, on typhoid urine, 300 

 Soil, bacteriology of, 116-150 



bacteria in, 116 



composition of, 119-122 



denitriflcation in, 123 



examination of, 117-119 



and typhoid fever, 146-148 



and tetanus, 140 



polluted, 149 



kinds of bacteria in, 119 



nitrification in, 125-131 



nitrogen-fixing bacteria in, 131-139 



and its relation to disease, 145 



pathogenic bacteria in, 140 



classification of bacteria from, llil, 

 120 



symbiosis in, 132, 136 

 Sorensen's dairy farm at York, 228 

 Species of bacteria, 28 

 Specificity of bacteria, 28 

 Spirillum, definition of, 88 



of cholera, 385 



of Obermeier, 8 



Spontaneous generation, 3 

 Sponges, 114 

 Spores, kinds of, 12 



resistance of, 12-15 



staining of, 462 



of yeasts, 98-99 

 Staining methods, 455-463 

 Standard of sterilisation, 24 

 Staphylococcus, 8, 311 



cereus albus, 311 



Staphylococcus — 



pyogenes aureus, 312 



pyogenes albus and oitreus, 311 

 Steatolytic ferments, 95 

 Steam, as a disinfector, 436-438 



disinfectors, 437 



steriliser, 24 



saturated, 436 



superheated, 436 



current, 437 

 Sterilisation, 23-25 



methods of, 23-25 

 Streptococcus, 7 



in milk, 297 



in water, 51 



in sewage, 155 



of scarlet fever, 297 



pyogenes, 312 



conglomeratws, 297 



HoUandicus, 199 



Streptothrix group, 367 



aetinomyces, 321 



hominis, 368 



eppinger, etc., 369 



luteola, 367 

 Structure of bacteria, 6 

 Sub-cultures, 456 



Sulphurous acid as a germicide, 441 

 Suppuration, 311 

 Swine fever, 272 



Swithinbank and author on milk, 188-190 

 Symbiosis, 29, 132, 136 

 Symptomatic anthrax, 142 



Table of economic bacteria in soil, 120 

 Temperature, influence of, on bacteria, 



17 

 Tetanus, 140-142 



toxin of, 141 



bacillus of, 141, 481 

 Thermophilic bacteria, 17 

 Thresh 's disinfector, 438 

 Thresh on bacteriological examination of 



water, 469 

 Thrush, 218 

 Tobacco-curing, 114 

 Toxins, 406-412 

 Tropical diseases, 370-404 

 Tuberculin, 347 

 Tuberculosis, 325-358 



pathology of, 325 



varieties of, 326 



history of, 326 



conveyed by the air, 79, 331 



and the milk supply, 335 



