Iiidex 



589 



other specific serums on, 365; of cerebral 

 substance on, 386; protective substances 

 against, 387; action of saliva on, 417; 



. action of bile on, 425 ; vaccination methods 

 of savage races against, 506 



Spermatozoa, resorption of, 84, 100; action 

 of spermotoxin on, 101, 116, 125 



Spermotoxin, 101, 116, 125 



Spiders, natural immunity of, against 

 tetanus toxin, 326 



Spirilla, natural immunity against, 159; 

 acquired immunity against, 227-230, 434 ; 

 living in stomach of dog, 177; acidophile, 

 418 



Spirochaete anserina', 160 



Spirochaete ohermeyeri, 160; acquired im- 

 munity against, 227-230; Pfeiffer's phe- 

 nomenon in, 229 



Spleen, function of, 62, 85; action of 

 extract of, on tetanus toxin, 365; effect 

 of removal of, 150, 293 ; as source of 

 fixative substance, 295, 537 



Spleen and other haematopoietic organs as 

 source of protective substance, 292-294; 

 as source of agglutinins, 264 ; are phago- 

 cytic organs, 85, 150, 292 



Sponges, digestion of, 69, 517 



Staining reactions of cells and micro-or- 

 ganisms, 13, 77, 83, 181, 183, 198, 213 



Standardisation of antidiphtheria serums, 

 376, 496-498; Ehrlich's method, 496; 

 Pasteur Institute method, 496-497 



Staphylococcus, acquired immunity against, 

 266, 532; protective action of normal 

 serum against, 319 



Staphylococcus pyogenes in vagina, 430 



Stellate cells of Kupffer, 75 



Stimulant action. See also Body fluids, 

 Protective 



Stimulant action of serums, 270-274, 301, 

 308-320, 365; of phagocytes, 532; of 

 normal fluids of the body, 559 



Stimulins and their action in serums, 270- 

 274 



Stohr's phenomenon, 429 



Stomach, acidophile microbian flora of, 

 418 



Streptococci, protective sheath formed by, 

 22; immunity against, 165, 179, 282, 

 284-286; phagocytosis in immunity 

 against, 245, 313; acquired immunity 

 against, 243-247, 313; agglutination by 

 serum of, 244, 245; reaction of animal 

 organism against, 245-247; antitoxin 

 against, 205; and phagocytosis, 283; 

 action of specific serums on, 287, 288, 

 312; protective action of various fluids 

 against, 320, 321 



Streptococcic serum, action of, on leuco- 



cidin, 359 

 Sturin, bactericidal action of, 183 

 Suprarenal capsules, protective function 

 of, 431 



Susceptibility. See aUo ChemiotaxiB, Hyper* 

 susceptibility, Irritability, Sensitiveness 



Susceptibility of immunised animals to 

 the specific toxin, 289; of frogs to tetanus 

 toxin, 330 ; diminution of, in immunised 

 animals, 374-376; in immunity, the part 

 played by, 665; cellular, a general pro- 

 perty of living beings, 665-5G6 



Swine. See Pig, Pneumo-enteritis 



Swine erysipelas, acquired immunity against, 

 236-239, 254, 283, 527; agglutination of 

 bacilli of, 262; specific serum of, will 

 not prevent infection, 270; phagocytosis 

 in, 283; action of immune serums on 

 bacillus of, 288, 289 ; protective action of 

 specific serum against, 307; method of 

 testing strength of serums against, 476; 

 vaccinations against, 473-477; Pasteur's 

 method, 473; Lorenz's method, 475; 

 "serum- vaccinations" method, 475; vac- 

 cines against, 208, 473, 509 



Swine plague, 259, 260 



Synapta, 518 



Syphilis, immunity in, 435; and general 

 progressive paralysis, 435; law of Pro- 

 fetta in immunity against, 453; law of 

 Baum^s-CoUes in, 436; transmission of, 

 452 



Tears, microbicidal function of the, 408 



Testing of serums. See Standardisation 



Tetanolysin of Ehrlich, 349 



Tetanospasmin, 362 



Tetanus, immunisation against, 344, 347, 

 492-495; cerebral, in rabbit, 383, 391; 

 difference between antitoxic action of 

 living brain and that of cerebral emul- 

 sion on, 383 ; in fowl, 384 ; no antitetanic 

 power in serum of convalescents, 443; 

 vaccinations against, 492-495; vaccines 

 against, 493 ; protective serum treatment 

 against, 493-495 



Tetanus antitoxin, hypothesis of nervous 

 origin of, 381-385 ; nature of, 355 ; mode 

 of action on toxin, 357, 381; of nerve 

 centres locally restricted in its action, 382 



Tetanus bacillus, natural immunity against, 

 169, 204 



Tetanus toxin, natural immunity of spiders 

 and scorpions against, 326 ; of larvae of 

 Oryctes and of cricket against, 829; of 

 frog against, 330; of reptiles against, 

 331-334; of fowl against, 335; of hiber- 

 nating animals against, 339; attenuation 

 of, 344 ; localisation of, in vascular organs, 

 336; brain of rabbit very susceptible to 

 action of, 383; fixation of, by substance 

 of nerve centres, 382; by certain parts of 

 brain and cord, 386, 391 ; by other cells, 

 391, 392; action of emulsions of frog's 

 brain on, 386; fixation of, by carmine, 

 388, 394; absorption of, by leucocytes, 

 393-395 ; action of extract of spleen on, 



