Index 



429 



d'Herelle's bacteiiophai^o theory, 310, 



311 

 Dialister pnciimonsintes, 88 

 Diastase, 375 

 Diffusion, 57 

 Dilutions 



for plate counts, 148-151 



methods of preparing, 148 

 Diphtheria, see Con/nebacterium 



diphtheriae 

 Diplocococcus pneumoniae 



capsules, 98, 99 



characteristics of, 328-330 



gram stain reaction, 110 

 Disease 



acute, 299 



chronic, 299 



definition of, 294 



demonic theory of, 295, 296 



endemic, 299 



epidemic, 300 



germ theory of, 297 



humoral theory of, 296, 297 



miasmic theory of, 296 



modes of transmission, 297-299 



pandemic, 300 



postulates of Koch, 38 



pvthogenic theory of, 297 



theories concerning, 36-50, 295-297 



transmission and man's resistance, 

 294-327 

 Disinfectant 



definition of, 196 



factors influencing, 199 



ideal, characteristics of, 197-199 



testing technics, 209-212 

 Dissociation of ions, 65 

 Distillery yeasts, 375 

 Donor, universal, 411 

 Downs, 168 



Drinking cups, 232, 233 

 Drinking fountains, 232, 233 

 Droplet infection, 299 

 Dry heat sterilization, 74-75 

 Drying, effect of on bacteria, 161, 162 

 Duclaux, 36 

 Dujardin, 54 

 Dunham, W. B., 399 

 DuNotiy, 171 

 Duran-Reynals, 186 



Dyes 



aniline, 107 



bacteriostatic, 214 



bactericidal, 214 



negative, 108 

 Dyne, 171, 172 



Eberth, 379 



Edwards, P. R., 402 



Egg inoculation technics, 398 



Ehrenberg, C, 54 



Ehrlich, P., 45, 113, 133,347 



Electrometric pH determination, 83 



Electron microscope, 19-21, 393 



Elementary bodies, 396 



Elements in bacterial cell, 64 



Elephantiasis, 353 



Endemic disease, 299-300 



typhus, 381 

 Endo agar 



descriptive chart for, 127 



in water analysis, 237 

 Endocarditis, 332 

 Endo enzymes, 62 

 Endomycetaceae, 370 

 Endospores, see spores 

 Endotoxins, 180, 181 



vs. exotoxins, 182 

 Enterotoxins, 183, 285, 333 

 Enzymes, 183, 184 



definition of, 62 



endo, 63 



extracellular, 62 



intracellular, 62 

 Eosine methylene blue agar 



descriptive chart for, 127 



in water analysis, 237 

 Epidemic disease, 300 

 Epidemic typhus, 384, 386 

 Erronaceae, 404 

 Erythrocytes, 408 

 Escherichia coli 



area of, 172 



gram stain reaction of, 110 



imvic reactions for, 134 



in flies, 351 



in food poisoning, 291 



in ice and water, 234 



in intestines, 303 



in water analysis, 132-135 



pH limits for growth, 69 



presence in feces, 123 



