INDEX OF SUBJECTS 



Bacterial enzymes or ferments, 42 

 action of, 42 



environmental conditions on, 43 

 reversible, 43 



similarity of, to ferments of special- 

 ized cells of higher plants and ani- 

 mals, 43 

 Bacterial filtrates for precipitin tests, 



preparation of, 254 

 Bacterial forms, variations of, 19 

 Bacterial mutation, 38, 39 

 Bacterial poisons, 184 

 action of, 187 

 ptomains and, 185 

 resistance of, to chemical action and 



heat, 187 

 summary of, 305 

 varieties of, 185 

 endotoxins, 185 

 proteins, 186 

 true toxins, 185 



Bacterial products in active immuniza- 

 tion, 195 



Bacterial proteins, 186 

 Bacterial spores, 15 

 formation of, 15 

 germination of, 17 

 position of, 17 

 varieties of, 15 

 arthrospores, 16 

 true, or endospores, 16 

 vegetative forms from, 17 

 Bactericidal action of blood serum, 



224 



Bactericidal strengths of common dis- 

 infectants, 85 

 Bactericidal substances compared with 



agglutinins, 231 

 Bactericidal tests, 257 

 in test tube, 257 

 technique of, 258 

 for typhoid fever, 258 

 in vivo, 255-7 



Bacteriemia, definition of, 184 

 Bacteriological examination of blood 



cultures, 178 

 choice of media for, 179 

 results of, estimation of, 180 



Bacteriological examination of blood 

 cultures, technique of obtaining 

 material for, 178 

 from typhoid patients; 180 

 of exudates, 175 

 of feces, 176 



of material from patients, 174 

 technique of collecting, 174 

 of water, 693 

 of urine, 176 

 Bacteriology, development and scope of, 



1-8 

 Bacteriolysins, 200 



immune, 225 

 Bacteriolytic tests, 255 

 Pfeiffer's test in, 255 



determination of bacteriolytic power 

 of serum against a known micro- 

 organism in vivo by, 255 

 identification of microorganism in 

 known immune serum in vivo by, 

 257 



Bacteriotropins, 282, 316 

 Bacterium, 37 

 Bacterium tularense, 562 

 Bail, aggressin theory of, 292 



opposition to, 293 

 Barsiekow's medium for colon-typhoid 



differentiation, 138 

 Bauer's modification of Wassermann 



test for syphilis, 268 

 "Bazillenemulsion," 492 

 Beggiatoa, genus, 38 

 Beggiatoaceae, 38 

 Berkefeld_ filter, 120, 121 

 Bile medium for colon-typhoid differen- 

 tiation, 137 



Bile-salt agar, MacConkey's, for colon- 

 typhoid differentiation, 138 

 Bitter milk, bacteria causing, 703 

 Black Death, 554 



Bladder diseases due to colon bacillus, 395 

 Blastomycetes. See Yeasts and Yeast 



cells 

 Blood, laked, 225 



the seat of immunizing agencies, 198 

 Blood corpuscles, red, in Ehrlich's the- 

 ory of ly tic process in blood serum,227 



