1168 



INDEX OF SUBJECTS 



Dermentor Venustus -in. the transmis- 

 sion of Kocky Mountain Spotted 

 fever, 951 

 Desensitization, 364 



methods for, 369, 370 

 Destruction of bacteria, 76 

 by chemical agents, 86 

 gaseous, 105 

 in solution, 86 

 inorganic, 87 

 organic, 94 



by physical agents, 76 

 drying, 76 

 light, 77 

 electricity, 79 

 heat, 79 



Diastase. See Amylase 

 Dichloramine T, 93 

 Dientamoeba fragilis, 1072 

 Diet, effect on intestinal flora, 224, 226 

 Diphtheria bacillus, 561-582 

 antitoxin, 269-273 



concentration of, 272 

 immunization of horses, 270, 271 

 prophylactic doses, 273 

 prophylactic immunization, 580-582 

 regulation of by law, 272 

 specific therapy, 578-580 



dosage in, 579 

 standardization of, 271 

 therapeutic doses, 273 

 toxin-antitoxin reaction, theoretical 



considerations, 255-268 

 unit, definition of, 271 

 biological characteristics, 564 

 carrier problem in, 575-577 

 cultivation of, 565 



Loeffler's medium, 565 

 diagnosis, 567 



diphtheria-like bacilli, 582-584 

 bacillus Hoffmanni, 582 

 bacillus Xerosis, 584 

 diphtheria bacilli, 584-585 



differentiation by sugar fermenta- 

 tions, 585 

 discovery of, 561 

 epidemiology of, 574-577 

 carriers in, 575-577 



Diphtheria bacillus, isolation, 566 

 morphology, 562 

 pathogenicity, 567-570 

 causes of death, 569 

 for animals, 570 

 ' ' pseudomembranes, ' ' 567 

 resistance of, 564 

 Schick reaction, 577 

 staining, 562 



Neisser stain, 563 

 Toluidin blue, 564 

 thermal death point, 564 

 toxin, 571-574 



in antitoxin reaction, theoretical 



considerations, 225-268 

 chemical and physical properties 



of, 573 



Ehrlich's analysis of, 257-263 

 deterioration of, 258 

 expitoxoid or toxon, definition 



of, 261 



Limes death or L-f- dose, defin- 

 ition of, 260 



Limes zero in L dose, defini- 

 tion of, 259 

 method of partial absorption, 



262 



standardization, 258 

 toxoid, 259 

 unit of, 257 



method of production, 571 

 thermolability, 572 

 virulence determination 

 Diphtheroids, description of, 584, 585 



in the normal nose, 221 

 Diplococcus crassus, 535 

 Diplococcus gonorrhoeas, 547. See also 



Gonococcus 

 Diplococcus lanceolatus, 438. See also 



Pneumococcus 

 Diplococcus mucosus, 536 

 Diplococcus pneumoniae, 438. See also 



Pneumococcus 



Discomyces, 964. See also Nocardiae 

 bovis, 965 



in madura foot, 972 

 Disinfectants, 86-109 



