BACTERIOLOOY AND IMMUNITY 



Smoothness in relation to antigenic structure, 



277, 285 

 Sneeze, droplets in, 2003 

 Snotsiekte, 1966 

 Snow, bacteria in, 2014 

 Snuff, in treatment of nasal diphtheria carriers, 



1386 

 Snuffles in rabbits, 1647 

 Soft chancre, 1790 



Sodium desoxycholate, 571, 659, 706, 1528 

 Somatic antigens, 276, 283 

 Sonic waves, effect of on bacteria, 110 

 Sonne's bacillus. See Shigella sonnei 

 Sordelli's bacillus. See Clostridium bifer- 



mentans 

 Species, bacterial, 316 



Specific and group phases of flagellar (H) anti- 

 gens, 278 

 Specificity of antigen-antibody reactions, 242 

 Spectrum, diagrammatic representation of, 



103 

 Spinulosln, 178 

 Spirillum, 527-529 



minus, 529, 925, 1276-1278, 1838 



rubrum, 527, 528 



serpens, 529 



undula, 527, 529 



volutans, 529 

 Spirochseta, characters of, 907 



morsus muris. See Spirillum minus 



plicatilis, 907 

 Spirochsetes, 907-925. See also Spirochseta, 

 Gristispira, Leptospira and Treponema 



general characteristics of, 909-912 



in human mouth, 919 

 Spirochsetosis avian, 1808 



in animals, 1809 

 Spirochsetosis icterohsemorrhagica. See Weil's 



disease 

 Spleen, effect of removal on antibody forma- 

 tion, 1103 



on Bartonella infection, 903, 1797 

 Spontaneous generation, controversy on, 4 

 Spore formation, effect of calcium on, 291 



variation in, 291 

 Spores, as antigens, 279, 840 



bacterial, 24 



bacteriophage in relation to, 347 



chromatinic bodies of, 25 



germination of, 25 

 Sporogenes vitamin, 69 



Spotted fever, due to Neisseria meningitidis. 

 See Meningitis 



due to Rickettsia rickettsi, 935, 1846 

 Spreading-factors in bacterial infection, 1012 

 Staining of bacteria, 37 

 Staining reactions in identification of bacteria, 



358 

 Standard deviation, 985 

 Standard error, 987 



of a difference, 987, 994 

 Standardization of antitoxin, 238. See also 

 under individual diseases and organisms 



of disinfectants. See Disinfectants 

 Standardization of various reagents. See 



under individual reagents 

 Staphylocoagulase, 617 



Staphylococcus, 607-622 



antigenic structure of, 613 



antiserum to, 620, 1504 



bacteriophage typing of, 614 



biochemical reactions of, 612 



capsulation of, 608 



chemical fractionation of, 613 



classification of, 620 



coagulase formation by, 617 



cultural reactions of, 609 



enterotoxin of, 616, 1605 



habitat of, 608 



hsemolysin production by, 615, 616 

 a-hsemolysin, 615 

 /3-lysin, 616 

 y-lysin, 616 



in broncho-pneumonia, 1667 



in food poisoning, 1604-1608 



in suppurative lesions, 1490-1506 



leucocidin production by, 616 



metabolism of, 610 



morphology of, 608 



pathogenicity of, 618 



pigment production by, 611 



resistance of, to heat and disinfectants, 612 



satellite growth of H. influenzae in relation 

 to, 790 



toxin production by, 614, 1605 



toxoid in vaccination, 1506 



vaccines of in treatment, 1505 



albtts, 607 et seq., 620, 622 



aurantiacus, 622 



aureus, 607 el seq., 621 



in wound infection, 1501-1503 



candicans, 622 



Candidas, 622 



citreus, 607 et seq., 620, 622 



epidermidis, 622 



epidermidis albus, 607 



pyogenes albus, 607 



pyogenes aureus, 607 



pyogenes citreus, 607 



salivarius, 607, 622 



salivarius pyogenes, 607 

 Starvation, effect of on resistance, 1201 

 Stationary phase of growth, 83, 94 

 Statistical methods, use of, 980-1001 

 SterHization, early work on, 7 



of milk, 2053 

 Stern reaction, 706 

 Stomach, bactericidal mechanisms of, 1020 • 



normal flora of, 1987 

 Stomatitis, aphthous, 1897 



contagious pustular of horses, 1895 



herpetic, 1897 



vesicular of horses, 1907 

 Strangles, 581, 582, 1496 



of horses, 1496 

 Straus's reaction, 489, 490 

 Streptobacillus moniliformis. See Actinomyces 



muris 

 Streptococcus, 559-601 



anaerobic species of, 596, 1772, 1996 

 in gas gangrene, 1772 

 in puerperal fever, 1484 

 in septicaemia, 1491 



antigenic structure of, 572-588 



