INDEX. 



283 



Pago. 

 Sodium chloride, 



effect on luminous bacteria 60 



restraining influence of 70, 252 



Sodium fluoride, germicidal action of 253 



Sodium hydrate, method of increasing tolera- 

 tion of 70 



Sodium nitrite, used for indol test 62 



Softening hard tissues, fluid for 200 



Soft-rot bacteria, many plants attacked by. ... 87 

 Soil, 



bacteria in upper layers of 255 



parasites carried in 91 



sterilization of 85 



Solid vegetable media, 



behavior of organisms on 40 



preparation of 40 



substances recommended 40 



Solio paper, toning bath for 201 



Solubility of glassware 129, 223 



Solution of tissues occupied by bacteria 10 



Solution persulphate of iron, preparation of. . 188 



Sorghum, natural infection in 92 



Soy-bean, natural infection in 92 



Sphaerotilus 162 



Species, 



morphology not sufficient for differentiation . 25 

 Specimens, method of substituting alcohol for 



water in 226 



Spectrum, part possessing germicidal action. . 244 



Spencer microscopes 129 



Spina, studies of reduction processes 239 



Spirillum 161 



branching in 217 



double staining of 217 



Ehrenberg's genus 173 



Spirillum undula, 



action of ether on 254 



flagella of 20 



Spirillum volutans, 



flagella of 20 



reaction to stimuli 27 



Spirochaeta lot 



Spirodiscus 162 



Spiromonas 162 



Spirosoma 161 



Spores, 



action of heat on 84 



Aujeszky's stain 219 



bacilli bearing green 218 



cause of resistance to dry heat 218 



classification based on 157 



common in stringy bread 261 



effect of steam on 246 



Fiocca's stain 218 



Foth's stain 218 



germination of 21 



influence of environment on formation 



Of 219, 222 



Klein's stain 219 



means for identification of 21 



Moeller's stain 218 



reaction to stains 27 



Page. 



Spores continued, 

 resistance to high temperatures and steam 



heat 21, 84, 246 



resistant, present in meat-extracts 260 



resistant, present in milk 46 



stains for. 194 



Spraying, inoculation by 108 



Stadler, effect of sodium chloride on bacteria. 252 



Stage-micrometer 115 



Staining, 



bacteria in tissues 29, 222 



double 217,218 



microtome-sections 119 



Staining-media, groups of 28 



Staining methods 221 



bacteria, vegetative forms 27,187 



capsules 19, 194 



flagella 20, 21, 27, 189 



spores 27, 194 



tissues 187 



Staining produced by bacteria, 



in host-plant 65 



in nutrient substrata 65, 211, 214, 237 



Stains, 



anilin, alcoholic solutions of 187 



general and miscellaneous 187 



Starch from potato, preparation of 50 



Starch-jelly, nutrient 50, 196 



Starch, test for slime derived from 221 



Starrett cross-level ^9 



Starvation, resistance to 223 



Statistics, need of, on plant diseases 90 



Steam, 



spores resistant to 84 



sterilization by, possible source of error in. 47 



vegetative bacteria sensitive to 83 



Steaming, 



media in tubes 48 



milk for culture-media 46, 47 



Steam-sterilizer, Arnold 47 



Stephens, flagella-stain 220 



Sterilization, 



cold, of culture-fluids 43, 52 



cotton IOI 



culture-media 85 



dry, of pipettes, scalpels, etc 41 



glassware, instruments 100, 107 



infectious material ' IO 6 



milk 46 



oven for loo 



silicate-jelly JQ 



soils \] 8s 



solid vegetable media 40 



starch-jelly g O 



surface of plants before making cultures 



from j-j 



surface of plants to be inoculated 41, 108 



syringes IO2 



with metallic copper 97 2 r? 



Still, 



for water, in small quantities 128 



for water, on a large scale 124 



