INDEX OF SUBJECTS 



747 



Heat sterilization, moist, by fractional 

 sterilization, 70 

 by live steam, 60 

 by steam under pressure, 71 

 Hektoen and Ruediger on structure of 



opsonins, 283 

 Hemagglutinins, 235 

 Hematogen, 538 

 Hemolysin, immune, 226 

 Hemolysins of Staphylococcus pyogenes 

 aureus, 329 

 of Streptococcus pyogenes, 344 

 specificity of, 247 

 varieties of: 

 autolysins, 247 

 heterolysins, 247 

 isolysins, 247 

 Hemolysis, 201, 225 

 Hemoljrtic tests, 259 

 obtaining blood for, 259 

 in large quantities; 260 

 in small quantities, 259 

 standard concentration of red blood 

 cells for, 259 

 Hemolytic unit, definition of, 265 

 Hemorrhagic septicemia bacilli, 551 

 morphology of, 551 

 staining of, 551 

 varieties of: 

 baciUus of chicken cholera, 552 

 Bacillus pestis, 554 

 bacillus of swine plague, 553 

 Hepatotoxin, 201 



Hesse's medium for colon-typhoid differ- 

 entiation, 133 

 Heterolysins, 247 

 Hides, tanning of, bacteria in, 716 

 Hiss' agar-gelatin medium, isolation of 



typhoid baciUus in stools by, 407 

 Hiss' leucocyte .extract theory and 



therapy, 289 

 Hiss' methods of staining capsules, 98 

 Hiss' plating media for colon-typhoid 



differentiation, 133 

 Hiss' tube medium for colon-typhoid 



differentiation, 133 

 Hiss' serum water media for fermenta- 

 tion tests, 132 



"Hog-cholera" bacilli, 430 

 differentiation of, from swine plague 

 bacillus, 554 

 Hogyes, dilution method of, in treat- 

 ment of rabies, 656 

 Horse meat, detection of, by precipitin 



tests, 254 

 Horses used in production of diphtheria 

 antitoxin, 216-17 

 of tetanus antitoxin, 221 

 Howard and Perkins, discovery of Strep- 

 tococcus mucosus by, 350 

 Hydrogen, formation of, by bacteria, 

 165 

 in nutrition of bacteria, 28 

 Hydrogen peroxid as disinfectant, 76 

 Hydrogen sulphid formed by bacteria, 



165 

 Hydrophobia. See Rabies 

 Hypersusceptibihty. See Anaphylaxis 

 Hyphomycetes, 635 

 conditions favorable to growth of, 638 

 diseases caused by, 639 

 favus, 640 



pityriasis versicolor, 639 

 ringworm, 642 

 thrush, 640 

 diseases sometimes accompanied by, 



644 

 morphology of, 635 

 reproduction of, 635 

 mycomycetes in, 636 

 Aspergillus variety in, 637 

 Penicillium variety in, 637 

 sporulation by other methods in, 

 637 

 phycomycetes in, Mucorinae vari- 

 ety of, 635 

 sexual reproduction of, 636 

 structural classification of, 635 

 varieties of, 635 

 mycomycetes, 635 



morphology of (typical), 635, 636 

 ascospores in, 638 

 conidia (or spores) in, 638 

 conidiophores in, 637 

 hyphal branches (septate) in, 

 637 



