896 



INDEX 



Spirochaetes, size, 105 

 Spongomonas uvella, 26 

 Spores, 37 



resistance of, 220 

 Sporogony, 27, 126 

 ' Sporoplasm, 69 

 Sporothrix, 732 



Sporotrichum globuliferum, 634 

 Sporozoa, 130, 134, 833 

 Sporozoits, 126 

 Sporulation, of ascospores, 69 

 Stable, air of, 374 

 Staphylococcic infections, 85, 741 

 Starch, fermentation of, 555 



for manufacture, 555 



raw materials of, 555 

 Starters, for beer, 528 



butter, 415 



buttermilk, 446 



cheese, 427 



milk drinks, 441 



vinegar, 543 



wine, 518 

 Stauronautus maroccanus, 640, 642 

 Steapsin, 194, 196 

 Sterigma, 39 

 Sterigmatooystis, 53 



ochracea, 55 

 Sterilization, of corn, 466 



economic importance of, 464 



of fish, 465 ■ 



of fruits, 466 



of meat, 465 



of peas, 466 

 Stilton cheese, 436 

 Stomach, 691 



microorganisms of, 499 



protection by, 691 

 Straining of milk, 386 

 Streptococcic infections, serum for, 



580 

 Streptococci in sewage, 257, 282 

 Streptococcus, 85 



bombycis, 635 



hsemolyticus, 497 



lacticus, 164, 166, 202, 245 



Streptococcus, mesenteroides, 455> 



555 



pneumoniae, 663, 670, 673, 691, 

 692, 747 



pyogenes, 572, 662, 663, 670, 672, 

 673. 677. 682, 688, 690, 704, 

 744. 747 



salivarius, 497 



viridans, 497, 498 

 Subsidence in water, 264, 266, 267 

 Sugar, in fermentation, 153, 163, 196 



in fermentation in soil, 317 



manufacture, 555 

 Sugar-beet tuberculosis, 611 

 Sulphate reduction, in sewage, 279 



in soil, 358 

 Sulpho-bacteria, 91, 97, 108, 358 

 Sulphur cycle, 186 



oxidation, 172, 174, 281, 359 



in soil, 314, 358 

 Sulphurous acid as preservative, 484 

 Surface washings in soil, 256 



in water, 256 

 Susceptibility, 684 



definition, 684 



familial, 688 



general, 684 



hyper, 684 



individual, 688 



natural, 687 



racial, 687 

 Suspensions for agglutination tests, 



585 



Swamp fever, 819 



Swine erysipelas, 778 



Swiss cheese, 434 



Symbiosis, 241 



Symbiotic nitrogen fixation, cultures 

 in, 343 

 development of organisms, 346 

 entrance of organisms, 346 

 environmental relations, 348 

 history of^ 343 



inoculation, methods of, 350, 352 

 legume-earth for inoculation, 352 

 mechanism of, 348 



